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4541/1SULITCHEMISTRYKertas 1Ogos 2012
1 jam
BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUHDAN SEKOLAH KECEMERLANGAN
KEMENTERIAN PELAJARAN MALAYSIA
PENTAKSIRAN DIAGNOSTIK AKADEMIK SBP 2012
SIJIL PELAJARAN MALAYSIA
CHEMISTRY
Kertas 1
Satu jam lima belas minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
Arahan:
1. Kertas soalan ini adalah dalam dwibahasa.
2. Soalan dalam Bahasa Inggeris mendahului soalan yang sepadan dalam Bahasa Melayu.
3. Calon dikehendaki membaca maklumat di halaman belakang kertas soalan ini.
Kertas ini mengandungi 31 halaman bercetak
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1 Which substance consists of atoms? Bahan manakah terdiri daripada atom?
A Neon Neon
B Water Air
C Hydrogen Hidrogen
D Ammonia Ammonia
2 One mole of nitrogen, N 2 and one mole of sulphur trioxide, SO 3 haveSatu mol nitrogen, N2 dan 1 mol sulfur trioksida, SO 3 mempunyai
A the same number of moleculesbilangan molekul yang sama
B the same number of atomsbilangan atom yang sama
C the same proton numbernombor proton yang sama
D the same mass
jisim yang sama
3 The following information is about element X. Maklumat berikut adalah mengenai unsur X.
Can be used as catalyst in industry Boleh digunakan sebagai mangkin dalam industri Forms complex ions Membentuk ion kompleks
Which of the following is correct about element X? Antara berikut yang manakah benar mengenai unsur X?
A It is a soft solid Ia adalah satu pepejal lembut
B It has a low melting point Ia mempunyai takat lebur yang rendah
C It forms coloured compounds Ia membentuk sebatian berwarna
D It cannot conduct electricity in solid state Ia tidak boleh mengalirkan elektrik dalam keadaan pepejal
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4 Methane is a covalent compound.Which of following is correct about methane?
Metana adalah satu sebatian kovalen.
Antara berikut yang manakah betul tentang metana?
A Cannot conduct electricity Tidak boleh mengalirkan arus elektrik
B Has high boiling point Mempunyai takat didih yang tinggi
C Dissolves in water Larut dalam air
D Has low volatility Mempunyai kemeruapan yang rendah
5 Diagram 1 shows an electrolytic cell. Rajah 1 menunjukkan satu sel elektrolitik
Diagram 1 Rajah 1
Which substance is suitable to be used as an electrolyte? Bahan manakah sesuai digunakan sebagai satu elektrolit?
A Sodium hydroxide solution Larutan natrium hidroksida
B Glucose solution Larutan glukosa
C Ethyl ethanoate Etil etanoat
D Ethanol Etanol
Carbon electrodes Elektrod karbon
Electrolyte Elektrolit
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6 Which of the following is correct about acid? Antara berikut yang manakah betul tentang asid?
A The taste is bitter Rasanya pahitB The pH value is more than 7
Nilai pH lebih daripada 7 C Change red litmus paper to blue
Menukarkan kertas litmus merah ke biru D Ionised in water to produced hydrogen ion
Mengion dalam air menghasilkan ion hidrogen
7 Diagram 2 shows the stages involved in the Contact Process to producesulphuric acid.
Rajah 2 menunjukkan peringkat-peringkat yang terlibat dalam ProsesSentuh untuk menghasilkan asid sulfurik.
SO 2 I
SO 3 II
H2S2O7 III
H 2SO 4
What is the optimum temperature and the catalyst used in stage I? Apakah suhu optimum dan mangkin yang digunakan dalam peringkat I?
Temperature ( oC)Suhu ( oC)
Catalyst Mangkin
A200 Manganese(IV) oxide
Mangan(IV) oksida
B 450 Vanadium(V) oxideVanadium(V) oksida
C 450 Iron Besi
D 200 Nickel Nikel
Diagram 2 Rajah 2
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9 Diagram 3 shows the decomposition of hydrogen peroxide at room temperature. Rajah 3 menunjukkan penguraian hidrogen peroksida pada suhu bilik.
Diagram 3 Rajah 3
What should be done to increase the rate of decomposition of hydrogen peroxide? Apakah yang perlu dilakukan untuk meningkatkan kadar penguraian hidrogen peroksida?
A Add waterTambah air
B Add catalystTambah mangkin
C Use small beakerGunakan bikar lebih kecil
D Cool the hydrogen peroxideSejukkan hidrogen peroksida
8 Which reagent is used to identify the present of chloride ion, Cl in a solution? Reagen manakah digunakan untuk mengenal pasti kehadiran ion klorida, Cl - dalam satu larutan?
A Silver nitrate Argentum nitrat
B Barium sulphate Barium sulfat
C Sodium hydroxide Natrium hidroksida
D Potassium thiocyanate
Kalium tiosianat
Hydrogen peroxide Hidrogen peroksida
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10 Diagram 4 shows the structural formula of a hydrocarbon compound. Rajah 4 menunjukkan formula struktur bagi satu sebatian hidrokarbon.
What is the name of the compound based on IUPAC nomenclature? Apakah nama sebatian ini berdasarkan penamaan IUPAC?
A 2- methylbut-2-ene2-metilbut-2-ena
B 2 -methylbut-3-ene2-metilbut-3-ena
C 3- methylbut-2-ene3-metilbut-2-ena
D 3- methylbut-3-ene3-metilbut-3-ena
11 The chemical equation represents the reaction between zinc oxide, ZnO and carbonmonoxide, CO.
Persamaan kimia mewakili tindak balas antara zink oksida, ZnO dan karbonmonoksida, CO.
ZnO + CO Zn + CO 2
What is the role of carbon monoxide in this reaction? Apakah peranan karbon monoksida dalam tindak balas ini?
A Dehydrating agent Agen penghidratan
B Reducing agent Agen penurunan
D Oxidising agent Agen pengoksidaan
D Catalyst Mangkin
Diagram 4 Rajah 4
=
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12 Which chemical reaction releases heat to the surrounding?Tindak balas kimia manakah yang membebaskan haba ke persekitaran?
A Dissolving sodium hydroxide in water Melarutkan kalsium karbonat ke dalam air
B Dissolving ammonium nitrate in water Melarutkan ammonium nitrat dalam air
C Dissolving potassium carbonate in water Melarutkan kalium karbonat dalam air
D Dissolving potassium hydrogen carbonate in water Melarutkan kalium hidrogen karbonat ke dalam air
13 Diagram 5 shows the electron arrangement of oxygen atom. Rajah 5 menunjukkan susunan elektron bagi atom oksigen.
Which of the following is correct about this atom? Antara berikut, yang manakah betul tentang atom ini?
A The proton number is 6 Nombor proton ialah 6
B The nucleon number is 8 Nombor nukleon ialah 8
C The number of neutrons is 6 Bilangan neutron ialah 6
D The number of electrons is 8 Bilangan elektron ialah 8
Diagram 5 Rajah 5
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14 Which food additive can prevent the activity of microorganism in food? Bahan tambah makanan manakah boleh menghalang aktiviti mikroorganisma dalam
makanan?
A Pectin Pektin
B Lecithin Lecitin
C Benzoic acid Asid benzoik
D Ascorbic acid Asid askorbik
15 Diagram 6 shows the set-up of apparatus to determine the empirical formula of Poxide.What is P oxide?
Rajah 6 menunjukkan susunan radas untuk menentukan formula empirik bagi oksida P. Apakah oksida P?
Crucible P oxide Mangkuk pijar Oksida P
Diagram 6
Rajah 6A Silver oxide
Argentum oksidaB Lead (II)oxide
Plumbum (II) oksidaC Copper (II) oxide
Kuprum(II) oksidaD Magnesium oxide
Magnesium oksida
Heat Panaskan
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16 Diagram 7 shows the set-up of apparatus for a simple voltaic cell. Rajah 7 menunjukkan susunan radas bagi satu sel voltan ringkas.
Diagram 7
Rajah 7
Which pair of metal will produced the highest voltmeter reading when it is used aselectrode P and electrode Q?
Pasangan logam manakah akan menghasilkan bacaan voltmer paling tinggi apabila iadigunakan sebagai elektrod P dan elektrod Q?
P QA Magnesium
Magnesium
Silver
Argentum B Zinc
ZinkIron
Ferum C Tin
Stanum Lead
Plumbum D Aluminium
AluminiumCopper
Kuprum
Electrode Q Elektrod Q
Electrode P Elektrod P
Copper(II) sulphate solution Larutan kuprum(II) sulfat
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17 Metal X is soft and shiny. It reacts with cold water to produce an alkaline solution.What is metal X?
Logam X adalah lembut dan berkilat. Ia bertindak balas dengan air untukmenghasilkan larutan yang bersifat alkali. Apakah logam X?
A Magnesium Magnesium
B Sodium Natrium
C Copper Kuprum
D Zinc Zink
18 Which acid ionises completely in water? Asid manakah mengion dengan lengkap dalam air?
A CH 3COOHB H3PO 4
C H2CO 3 D H2SO 4
19 Which pair of solutions produces an insoluble salt? Pasangan larutan manakah menghasilkan satu garam tak terlarutkan?
A Nitric acid and silver nitrate solution Asid nitrik dan larutan argentum nitrat
B Potassium sulphate solution and zinc chloride solution
Larutan kalium sulfat dan larutan zink kloridaC Copper(II) sulphate solution and lead(II) nitrate solution
Larutan kuprum(II) sulfat dan larutan plumbum(II) nitratD Magnesium nitrate solution and copper(II) chloride solution
Larutan magnesium nitrat dan larutan kuprum(II) klorida
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20 Diagram 8 shows part of a Periodic Table of Elements.Element F reacts with element G to form a compound.
Rajah 8 menunjukkan sebahagian daripada Jadual Berkala Unsur.Unsur F bertindak balas dengan unsur G membentuk satu sebatian.
Diagram 8 Rajah 8
Which properties are correct for the compound formed between element F andelement G? Sifat manakah adalah betul bagi sebatian yang terbentuk antara unsur F dan unsurG?
Boiling point ( oC)Takat didih ( oC)
Solubility in water Keterlarutan dalam air
A Low Rendah
Does not dissolveTidak larut
B HighTinggi
Dissolves Larut
C HighTinggi
Does not dissolveTidak larut
D Low Rendah
Dissolves Larut
GF
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21 Which statements are true about the effect of concentration of reactants on the rate ofreaction based on the collision theory?
Pernyataan manakah betul tentang kesan kepekatan bahan tindak balas ke atas kadartindak balas berdasarkan teori perlanggaran?
I The kinetic energy of the reactant particles increases.Tenaga kinetik zarah-zarah bahan tindak balas bertambah.
II The frequency of collision between reactant particles increases. Frekuensi perlanggaran antara zarah-zarah bahan tindak balas bertambah.
III The number of reactant particles per unit volume increases Bilangan zarah-zarah bahan tindak balas per unit isi padu bertambah.
IV The activation energy of the reactant particles increases.Tenaga pengaktifan zarah-zarah bahan tindak balas bertambah.
A I and III only I dan III sahaja
B I and IV only I dan IV sahaja
C II and III only II dan III sahaja
D II and IV only
II dan IV sahaja
22 Ceramic is suitable for making the exterior of space shuttle because ceramicSeramik sesuai digunakan untuk membuat bahagian luar kapal angkasa kerana
seramik
A can store chargesboleh menyimpan cas
B has high melting pointmempunyai takat lebur tinggi
C can resist to chemical corrosiontahan terhadap kakisan kimia
D can withstand high pressure and heattahan terhadap haba dan tekanan tinggi
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23 Which statement best explains why vulcanised rubber is more elastic thanunvulcanised rubber?
Pernyataan manakah paling baik menerangkan mengapa getah tervulkan lebih elastik
daripada getah tak tervulkan?
A Size of molecule of vulcanised rubber is bigger.Saiz molekul getah tervulkan lebih besar.
B The melting point of vulcanised rubber is higher .Takat lebur getah tervulkan lebih tinggi .
C Vulcanised rubber has less double bond between carbon atoms.Getah tervulkan mempunyai kurang ikatan ganda dua antara atom-atomkarbon.
D Presence of sulphur cross-linkage pulls the vulcanised rubber molecule back totheir original position.
Kehadiran rantai silang sulfur menarik molekul getah tervulkan kembalikepada kedudukan asal.
24 Fe + ion solution can be converted to Fe + ions by adding zinc powder.Which substance can be used to replace zinc powder in this reaction?
Larutan ion Fe 3+ boleh ditukarkan kepada ion Fe 2+ dengan menambah serbuk zink. Bahan manakah boleh digunakan untuk menggantikan serbuk zink dalam tindak balasini?
A Chlorine water Air klorin
B Potassium iodide solution Larutan kalium iodida
C Potassium hexacynoferrate(II) solution Larutan kalium heksasianoferat(II)
D Acidified potassium manganate(VII) solution Larutan kalium manganat(VII) berasid
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25 The thermochemical equation represents a reaction between Ag + and Cl -. Persamaan termokimia mewakili tindak balas antara Ag + dan Cl -.
Ag+
(aq) + Cl-
(aq) AgCl(s); H = 65.5 kJmol-1
Ag + (ak) + Cl -(ak) AgCl(p); H = 65.5 kJmol -1
Which of the following is correct about the equation? Antara berikut yang manakah betul tentang persamaan itu?
A Heat is released to the surroundings Haba dibebas ke persekitaran
B The temperature of the mixture fallsSuhu campuran menurun
C 65.5 kJ of heat energy is absorbed to form 1 mol of silver chloride65.5 kJ tenaga haba diserap membentuk 1 mol argentum klorida
D The total energy of reactants is lower than the total energy of products Kandungan tenaga bahan tindak balas lebih rendah daripada kandungantenaga hasil tindak balas
26 Diagram 9 shows the structure of ions of cleaning agents P and Q. Rajah 9 menunjukkan struktur bagi ion agen pencuci P dan Q.
Diagram 9 Rajah 9
Which statement is true about cleaning agents P and Q? Pernyataan manakah benar tentang agen pencuci P dan Q?
A Cleaning agent P dissolves in soft water but cleaning agent Q forms a precipitatein soft water.
Agen pencuci P larut dalam air lembut tetapi agen pencuci Q membentukmendakan dalam air lembut.
B Cleaning agents P and Q have the hydrophobic part that are dissolve in water. Agen pencuci P dan Q mempunyai bahagian hidrofobik yang larut dalam air.
C Cleaning agent P is less effective than cleaning agent Q in hard water. Agen pencuci P lebih berkesan daripada agen pencuci Q dalam air liat.
D Cleaning agents P and Q form precipitate in acidic water. Agen pencuci P dan Q membentuk mendakan dalam air berasid.
COO - SO 3-
P Q
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27 Which diagram shows the arrangement of particles that has the strongest attractionforce between the particles?
Rajah manakah menunjukkan susunan zarah yang mempunyai daya tarikan antara zarah yang paling kuat?
A
B
C
D
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28 Diagram 10 shows the arrangement of atoms in bronze. Rajah 10 menunjukkan susunan atom dalam gangsa.
Which statement explains why bronze is harder than pure copper? Pernyataan manakah menerangkan mengapa gangsa lebih kuat daripada kuprumtulen?
A The arrangement of atoms is more compact in bronze.Susunan atom lebih padat dalam gangsa.
B There are no empty spaces between atoms in bronze.Tiada ruang kosong dalam gangsa.
C Layers of atoms are not easily to slide in bronze. Lapisan atom sukar menggelongsor dalam gangsa.
D Strong bonds are formed between copper atoms and tin atoms in bronze. Ikatan yang kuat terbentuk antara atom kuprum dan atom stanum dalam gangsa.
29 Table 1 shows the proton number for element X and element Y. Jadual 1 menunjukkan nombor proton bagi unsur X dan unsur Y.
ElementUnsur
Proton number Nombor proton
X 13Y 8
Table 1
Jadual 1
What is the formula of the compound formed when element X reacts with element Y? Apakah formula bagi sebatian yang terbentuk apabila unsur X bertindak balasdengan unsur Y?
A X2YB XY 2 C X3Y2 D X2Y3
Copper atom Atom kuprum
Tin atom Atom stanum
Diagram 10 Rajah 10
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30 Which statements are true about elements when going across Period 3? Pernyataan manakah betul mengenai unsur-unsur apabila merentasi Kala 3?
I The atomic size of elements increase.
Saiz atom bagi unsur-unsur semakin bertambah.II The electronegativity of atoms of the elements increase. Keelektronegatifan atom bagi unsur-unsur semakin bertambah.
III The properties of the oxide of the elements change from basic oxide toampotheric oxide and acidic oxide.Sifat oksida berubah daripada oksida bes kepada oksida amfoterik dan oksidaasid.
IV The nuclei force of attraction of atoms towards electron to achieve stableelectron arrangement becomes weaker.
Daya tarikan nukleus atom terhadap elektron untuk mencapai susunanelektron yang stabil semakin lemah.
A I and II I dan II
B II and III II dan III
C III and IV III dan IV
D I and IV
I dan IV
31 Electrolysis of 1.0 mol dm - of solution X is carried out using carbon electrodes.A yellow gas is released at the anode.What is solution X?
Elektrolisis larutan X 1.0 mol dm -3 dijalankan menggunakan elektrod karbon.
Satu gas kuning terbebas di anod. Apakah larutan X?
A Sodium bromide Natrium bromida
B Sodium chloride Natrium klorida
C Potassium iodide Kalium iodida
D Potassium hydroxide Kalium hidroksida
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32 The equation represents a reaction between potassium hydroxide solution andammonium sulphate.
Persamaan mewakili tindak balas antara larutan kalium hidroksida dan ammonium sulfat.
KOH + (NH 4)2SO 4 substance X + gas Y + H 2O KOH + (NH 4 )2SO4 substance X + gas Y + H 2O
What is substance X and gas Y? Apakah bahan X dan gas Y?
Substance X Bahan X
Gas YGas Y
A Ammonium hydroxide Ammonium hidroksida
Ammonia Ammonia
B Ammonium hydroxide Ammonium hidroksida
Nitrogen dioxide Nitrogen dioksida
C Potassium sulphate Kalium sulfat
Ammonia Ammonia
D Potassium nitrate Kalium nitrat
Nitrogen dioxide Nitrogen dioksida
33 Diagram 11 shows the energy profile for a reaction.
Rajah 11 menunjukkan profil tenaga bagi satu tindak balas.
Diagram 11 Rajah 11
What is the heat of reaction for this reaction? Apakah haba tindak balas bagi tindak balas ini?
A -40 kJ mol -1 B -42 kJ mol -1 C -68 kJ mol -1 D -110 kJ mol -
A + B
C + D28
68
110
EnergyTenaga
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34 Diagram 12 shows the activation energy, Ea in an energy profile diagram of thereaction between zinc granules and hydrochloric acid.
Rajah 12 menunjukkan tenaga pengaktifan,E a dalam gambar rajah profil tenaga bagitindak balas antara ketulan zink dan asid hidroklorik.
Diagram 12 Rajah 12
Which method is suitable to get lower activation energy, Ea in the reaction? Kaedah manakah sesuai digunakan untuk mendapatkan tenaga pengaktifan, yanglebih rendah,Ea dalam tindak balas itu?
A Use zinc powderGunakan serbuk zink
B Cool the hydrochloric acidSejukkan asid hidroklorik
C Add copper(II) sulphate solutionTambahkan larutan kuprum(II) sulfat
D Increase the concentration of hydrochloric acidTinggikan kepekatan asid hidroklorik
EnergyTenaga
Zn + 2HCl
ZnCl 2 + H 2
Ea
Ea
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35 Table 2 shows the observations for two chemical tests to identify a type of cation in asolution.
Jadual 2 menunjukkan pemerhatian bagi dua ujian kimia untuk mengenal pasti satu jenis kation dalam satu larutan.
TestUjian
Step Langkah
Observation Pemerhatian
I Add excess sodium hydroxide solution into thesolutionTambah larutan natrium hidroksida berlebihan kedalam larutan
Blue precipitate Mendakan biru
II Add excess ammonia solution into the solution
Tambah larutan ammonia berlebihan ke dalamlarutan
Table 2 Jadual 2
What is observed in test II? Apakah yang diperhatikan dalam ujian II?
A A brown ring is formedCincin perang terbentuk
B A green precipitate is formed Mendakan hijau terbentuk
C A dark blue solution is formed Larutan biru tua terbentuk
D A colourless solution is formed Larutan tidak berwarna terbentuk
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36 Diagram 13 shows a racing car. The body of the car is made of substance X. Rajah 13 menunjukkan sebuah kereta lumba. Badan kereta tersebut diperbuatdaripada bahan X.
Diagram 13 Rajah 13
Substance X has the following properties: Bahan X mempunyai ciri-ciri berikut:
strongkuat
lightringan
withstand high temperaturetahan suhu yang tinggi
durabletahan lasak
Which of the following is substance X? Antara berikut manakah bahan X?
A Steel Keluli
B Perspex Perspek
C CeramicSeramik
D Fibre glassGentian kaca
Substance X Bahan X
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37 Diagram 14 shows the label on a bottle of an orange juice. Rajah 14 menunjukkan label pada sebotol jus oren.
Diagram 14 Rajah 14
Which substance will enhanced the flavour and smell of the orange juice? Bahan tambah makanan manakah akan meningkatkan rasa dan bau pada jus orenitu?
A Octyl ethanoate
Oktil etanoatB Sulphur dioxide
Sulphur dioxidaC Ascorbic acid
Asid askorbikD Tatrazine
Tatrazina
Ingredients : Orange juice, sugar, water, tatrazine,sulphur dioxide, octyl ethanoate, ascorbic acid
Kandungan : Jus oren, gula, air, tatrazina, sulfur dioksida,octil etanoat, acid askorbik
Expiry date 30102012Tarikh luput 30102012
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38 Diagram 15 shows the apparatus set-up for the reaction between carbon and metal Toxide.
Rajah 15 menunjukkan susunan radas bagi tindakbalas antara karbon dan oksida
logam T.
Diagram 15 Rajah 15
When the mixture is heated strongly, a flame spreads to the whole mixture.What is metal T?
Apabila campuran itu dipanaskan dengan kuat, nyalaan tersebar ke seluruhcampuran.
Apakah logam T?A Zinc
ZinkB Copper
KuprumC Magnesium
MagnesiumD Aluminium
Aluminium
39 A patient is experiencing depression and difficulty in sleeping.Which medicine is suitable for treating the patient?Seorang pesakit mengalami tekanan dan kesukaran untuk tidur.
Ubat manakah sesuai untuk merawat pesakit itu?
A Codeine Kodeina
B Barbiturate Barbiturat
C Paracetamol Parasetamol
D Streptomycin
Streptomisin
Mixture of carbon powder and metal ToxideCampuran serbukkarbon dan oksidalogam T Heat
Panaskan
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40 Which substance is a liquid at room temperature? Bahan manakah adalah cecair pada suhu bilik?
Substance Bahan
Melting point ( oC)Takat lebur (oC)
Boiling point ( oC)Takat didih ( oC)
A -35 10B 45 240C -255 -170D 15 130
41 Table 3 shows the observation when metals L, M and P in Group 1 of the Periodic
Table are burnt in the separate gas jar containing chlorine gas .
Metal Logam
Observation Pemerhatian
L Burns slowlyTerbakar dengan perlahan
M Burns very vigorouslyTerbakar dengan sangat cerg as
P Burns vigorouslyTerbakar dengan cergas
Table 3 Jadual 3
What is the correct arrangement in decreasing proton number of the elements inthe Periodic Table?
Apakah susunan yang betul mengikut pengurangan nombor proton unsur-unsur itudalam Jadual Berkala? A L, P, MB M, L, P
C P, M, LD M, P, L
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42 The equation represents a reaction between dilute hydrochloric acid and magnesium. Persamaan mewakili tindak balas antara asid hidroklorik cair dengan magnesium.
p HCl + q Mg r MgCl 2 + H 2
What are the values of p, q and r in the balanced chemical equation? Apakah nilai bagi p, q dan r dalam persamaan kimia yang seimbang?
A p = 1, q = 1, r = 1B p = 1, q = 1, r = 2C p = 2, q = 1, r = 2D p = 2, q = 1, r = 1
43 50.0 cm 3 of 0.4 mol dm -3 sodium hydroxide solution, NaOH, is titrated with1.0 mol dm -3 sulphuric acid, H 2SO 4. What is the volume of sulphuric acid needed to neutralize the sodium hydroxidesolution?50.0 cm 3 larutan natrium hidroksida, NaOH 0.4 mol dm -3 telah dititratkan denganasid sulfurik, H 2SO4 1.0 mol dm
-3 . Berapakah isipadu asid sulfurik yang diperlukan untuk meneutralkan larutan natriumhidroksida itu?
A 10.0 cm
B 20.0 cmC 40.0 cmD 50.0 cm
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44 Table 4 shows the proton number of elements magnesium and oxygen Jadual 4 menunjukkan nombor proton bagi unsur-unsur magnesium dan oksigen.
Element
Unsur
Proton number
Nombor protonMagnesiumOxygen
128
Table 4 Jadual 4
Which of the following represents the electron arrangement of the compound formedwhen magnesium reacts with oxygen?
Antara berikut yang manakah mewakili susunan elektron bagi sebatian yang terbentukapabila unsur magnesium bertindak balas dengan oksigen?
A
B
C
D
Mg O
2+ 2-
Mg O
2-
MO O
2+ 2-
x
x
Mg
OO
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45 Table 5 shows the results of displacement reaction of metals to construct theelectrochemical series.
Jadual 5 menunjukkan keputusan bagi tindak balas penyesaran logam untuk membina siri eletrokimia.
Solution
Metal
W nitrate X nitrate Y nitrate Z nitrate
W X is displaced Y is displaced No change
X No change Y is displaced No change
Y No change No change No change
Z W is displaced X is displaced Y is displaced
Table 5 Jadual5
Which of the following is the correct ascending order of these metals in theelectrochemical series?
Antara berikut yang manakah kedudukan susunan secara menaik bagi logam-logamini dalam siri elektrokimia?
A X, W, Y, Z
B W, Y, X, ZC Y, X, W, ZD Z, W, X, Y
46 Calcium carbonate reacts with acid to produce a salt, carbon dioxide and water.Which acid will produce the highest rate of reaction?
Kalsium karbonat bertindak balas dengan asid untuk menghasilkan satu garam,karbon dioksida dan air.
Asid manakah akan menghasilkan kadar tindak balas paling tinggi?
A 20 cm of 0.1 mol dm - hydrochloric acid20 cm 3 asid hidroklorik 0.1 mol dm -3
B 20 cm 0.1 mol dm - sulphuric acid acid20 cm 3 asid sulfurik 0.1 mol dm -3
C 50 cm 0.1 mol dm - ethanoic acid acid50 cm 3 asid etanoik 0.1 mol dm -3
D 50 cm of 0.1 mol dm - nitric acid50 cm 3 asid nitrik 0.1 mol dm -3
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47 Diagram 16 shows the set-up of apparatus to investigate the effect of heating on a salt. Rajah 16 menunjukkan susunan radas untuk mengkaji kesan haba ke atas satu garam.
Diagram 16 Rajah 16
Which of the following is true about the salt? Antara berikut yang manakah benar tentang garam itu?
I Nitrogen dioxide gas is liberatedGas nitrogen dioksida terbebas
II Carbon dioxide gas is liberatedGas karbon dioksida terbebas
III Lead(II) oxide is formed Plumbum(II) oksida terhasil
IV The black residue is formed Baki berwarna hitam terbentuk
A I and III only I dan III sahaja
B I and IV only I dan IV sahaja
C II and III only II dan III sahaja
D II and IV only II dan IV sahaja
Lime waterir kapur
Lead(II) carbonate Plumbum(II) oksida
Heat Panaskan
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48 The chemical equation represents a reaction between chlorine gas and heated ironwool
Persamaan mewakili satu tindak balas antara gas klorin dengan wul besi panas. 3Cl 2 + 2Fe 2FeCl 3
What is the mass of iron(III) chloride formed when 120 cm 3 chlorine gas reacted withheated iron wool?[Relative atomic mass: Cl= 35.5 , Fe = 56,Molar volume of gas at room temperature = 24 dm 3 mol -1 ]
Berapakah jisim ferum(III) klorida yang terbentuk apabila 120 cm3 gas klorinbertindakbalas dengan wul besi panas?[ Jisim atom relatif: , Cl = 35.5, Fe = 56 ,
Isipadu molar gas pada suhu bilik = 24 dm 3 mol -1 ]
A 0.305gB 0.542gC 0.580gD 0.813g
49 Which chemical equation represents a redox reaction? Persamaan kimia manakah mewakili satu tindak balas redoks?
A Ba(NO 3)2 + Na 2SO 4 BaSO 4 + 2NaNO 3 B H2SO 4 + 2NaOH Na 2SO 4 + 2H 2O
C Cl2 + NaOH NaOCl + HCl
D Cl2 + H 2S S + 2HCl
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50 Diagram 17 shows a process of producing a compound Z. Rajah17 menunjukkan satu proses untuk menghasilkan satu sebatian Z.
Diagram 17 Rajah 17
What is the name of compound Z? Apakah nama sebatian Z?
A Ethyl ethanoate Etil etanoa t
B Ethyl propanoate Etil propanoat
C Propyl ethanoate Propil etanoat
D Propyl propanoate
Propil propanoat
END OF QUESTION PAPER
Propene Propena
Ethanol Etanol
Hydration Penghidratan
Compound ZSebatian Z
Compound YSebatian Y
Compound XSebatian X
Oxidation Pengoksidaan
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INFORMATION FOR CANDIDATES MATLUMAT UNTUK CALON
1. This question paper consists of 50 questions .
Kertas soalan ini mengandungi 50 soalan.
2. Answer all questions.
Jawab semua soalan.
3. Each question is followed by four alternative answers, A , B , C and D . For eachquestion, choose one answer only. Blacken your answer on the objective answer sheet
provided.
Tiap-tiap soalan diikuti oleh empat pilihan jawapan, iaitu A , B , C dan D . Bagi setiap soalan, pilih sat u jawapan sahaja. Hitamkan jawapan anda pada kertas jawapanobjektif yang disediakan.
4. If you wish to change your answer, erase the blackened mark that you have made.Then blacken the space for the new answer.
Jika anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan jawapan yang baru.
5. The diagrams in the questions provided are not drawn to scale unless stated .
Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.
6. You may use a scientific calculator.
Anda dibenarkan menggunakan kalkulator saintifik.
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Nama :............................................................. Tingkatan :..............................SULIT4541/2ChemistryKertas 2Ogos20122 jam
BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUHDAN SEKOLAH KECEMERLANGAN
KEMENTERIAN PELAJARAN MALAYSIA
PENTAKSIRAN DIAGNOSTIK AKADEMIK SBP 2012
SIJIL PELAJARAN MALAYSIA
CHEMISTRYKertas 2
Dua jam tiga puluh minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Tuliskan nama dan tingkatan pada ruang yangdisediakan.
2. Jawabsemua soalan daripadaBahagian A .Tuliskan jawapan anda dalam ruang yangdisediakan
3. Jawabsatu soalan daripadaBahagian B dansatu soalan daripadaBahagian C . JawapankepadaBahagian B danBahagian C hendaklahditulis pada kertas tulis.
4. Anda diminta menjawab dengan lebih terperinciuntuk Bahagian B dan Bahagian C. Jawapanmestilah jelas dan logik. Persamaan, gambarrajah, jadual, graf dan cara lain yang sesuaiuntuk menjelaskan jawapan anda bolehdigunakan.
5. Anda hendaklah menyerahkan kertas tulis dankertas tambahan, jika digunakan bersama-samadengan kertas soalan.
6. Penggunaan kalkulator saintifik yang tidak bolehdiprogramkan adalah dibenarkan.
Kertas soalan ini mengandungi28 halaman bercetak
Untuk Kegunaan PemeriksaBahagian Soalan Markah
penuhMarkahdiperoleh
A
1 92 93 104 105 11
6 11B 7 208 20
C9 2010 20
Jumlah
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Section ABahagian A
[60marks][60markah]
Answerall questions. Jawabsemua soalan dalam bahagian ini.
1 Diagram 1 shows the formula of two type of cleaning agents soap and detergent. Rajah 1 menunjukkan formula bagi dua jenis agen pencuci sabun dan detergen.
Diagram 1.1 Rajah 1.1
(a) State the type of cleaning agent: Nyatakan jenis agen pencuci:
A: ...
B: ...[2 marks][2 markah]
(b) Soaps form scum while detergents do not form scum with hard water. Thus thecleansing action of detergent is more effective than soap in hard water.
Sabun membentuk kekat manakala detergen tidak membentuk kekat dalam air liat.Oleh itu tindakan pencucian detergen lebih berkesan daripada sabun dalam air liat.
(i) Nameone ion in hard water that causes the formation of scum. Namakansatu ion dalam air liat yang menyebabkan pembentukan kekat.
..[1 mark]
[1 markah]
(ii) Stateone advantage of soap compared to detergent toward environment. Nyatakan satu kelebihan sabun berbanding dengan detergen terhadap alam sekitar
..[1 mark][1 markah]
CH 3(CH 2)11OSO 3- Na + CH 3(CH 2)16COO
- Na +
Cleaning Agent A Agen pencuci A
Cleaning Agent B Agen pencuci B
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(c) Table 1 shows the function of two types of medicine. Jadual 1 menunjukkan fungsi dua jenis ubat.
FunctionFungsi
Type of medicineJenis ubat
Relieve pain Mengurangkan kesakitan
Changes the emotions and behaviorof the patient. Mengubah emosi dan perlakuan pesakit.
Table 1.2 Jadual 1.2
Complete Table 1.2 by writing the type of medicine in the space provided.
Lengkapkan Jadual 1.2 dengan menulis jenis ubat di dalam ruang yang disediakan.[2 marks][2 markah]
(d) Diagram 1.3 shows the label on the box of banana cake. Rajah 1.3 menunjukkan label pada kotak yang berisi kek pisang.
Diagram 1.3 Rajah 1.3
(i) One of the ingredients in the food is not suitable for a diabetic patient.State the ingredient and suggest another food additive that give the same sweetness but has low calories content.Satu daripada bahan dalam makanan tersebut tidak sesuai bagi pesakitdiabatik. Nyatakan bahan tersebut dan cadangkan satu bahan tambahmakanan lain yang dapat memberikan kemanisan yang sama tetapimempunyai kandungan kalori yang lebih rendah.
.........
.........
[2 marks][2 markah]
Banana CakeKek Pisang
Ingredients:Bahan-bahan:
Wheat flour, egg, margarine, sugar, penthyl ethanoate, ascorbic acid,Sunset Yellow.
Kandungan: tepung gandum, telur, margerin, gula, pentil etanoat, asidaskorbik, Sunset Yellow.
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(ii) State the function of Sunset Yellow. Nyatakan fungsi Sunset Yellow.
........[1 mark]
[1 markah]
2 Diagram 2.1 shows part of the Periodic Table of the Elements. Na, Mg, Cl and Ar represent the actual symbol of the elements. Rajah 2.1 menunjukkan sebahagian daripada Jadual Berkala Unsur. Na, Mg, CldanArmewakili simbol sebenar unsur.
Diagram 2.1 Rajah 2.1
Based on Diagram 2.1: Berdasarkan Rajah 2.1:
(a) (i) Name the element which is located in Group 2 and Period 3. Namakan unsur yang terletak dalam Kumpulan 2 dan Kala Ke-3.
....................................................................................................................................[1 mark]
[1 markah]
(ii) Explain why the element in (a)(i) is located in Period 3.Terangkan mengapa unsur dalam (a)(i) terletak dalam Kala Ke-3.
.....................................................................................................................................[1 mark]
[1 markah](b) Chlorine atom is smaller than magnesium atom. Explain why.
Atom klorin lebih kecil daripada atom magnesium. Terangkan mengapa.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................[2 marks]
[2 markah]
Na Mg Cl Ar
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(c) State one use of argon in daily life. Nyatakan satu kegunaan argon dalam kehidupan seharian.
..........................................................................................................................................[1 mark][1 mark ]
(d) Name the element which exists as monoatomic gas. Namakan unsur yang wujud sebagai gas monoatom.
..........................................................................................................................................[1 mark]
[1 markah]
(e) Chlorine, Cl2 gas reacts with hot iron wool to produce a brown solid.Gas klorin,Cl2 bertindak balas dengan wul besi panas untuk menghasilkan pepejal perang.
(i) Complete the chemical equation below. Lengkapkan persamaan di bawah.
____ Cl2 (g) + ____ Fe(s) ____ FeCl3(s) [1 mark]
[1 markah]
(ii) Based on the chemical equation in (e)(i), calculate the maximum mass of iron(III) chloride formed when 0.05 mol of iron is used in the reaction.[Relative atomic mass: Fe = 56 ; Cl = 35] Berdasarkan persamaan kimia pada (e)(i), hitungkan jisim maksimum ferum(III) klorida yang terbentuk apabila0.05 mol ferum digunakan dalamtindak balas.[ Jisim atom relatif : Fe = 56 ; Cl = 35]
[1 mark]
[1 mark ]
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(iii) Diagram 2.2 shows the apparatus set-up for three different experiments.Mark ( ) in the box which shows the correct apparatus set-up for the reaction between chlorine gas, Cl2 and hot iron wool. Rajah2.2 menunjukkan susunan radas untuk tiga eksperimen berbeza.Tanda( ) dalam petak yang menunjukkan susunan radas yang betul bagitindak balas antara gas klorin, Cl2 dengan wul besi panas.
Diagram 2.2 Rajah 2.2 [1 mark]
[1 markah]
Chlorine gasGas klorin
Hot iron woolWul besi panasHeat
Panaskan
Hot iron woolWul besi panasHeat
Panaskan
Chlorine gasGas klorin
Chlorine gasGas klorin
Hot iron woolWul besi panas
Heat Panaskan
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(b) Hydrogen reacts with chlorine to form compound A whereas potassium reactswith chlorine to form compound B.Diagram 3.2 shows the electron arrangement of compound A and compound B. Hidrogen bertindak balas dengan klorin untuk membentuk sebatian A manakalakalium bertindak balas dengan klorin untuk membentuk sebatian B. Rajah 3.2 menunjukkan susunan elektron bagi sebatian A dan sebatian B.
Compound A Compound BSebatian A Sebatian BDiagram 3.2 Rajah 3.2
(i) State the type of compounds. Nyatakan jenis sebatian tersebut.
A: ..
B: ..[2 marks][2 markah]
(ii) Write the electron arrangement of atom KTuliskan susunan elektron bagi atom K.
...[1 mark]
[1 markah](iii) State one physical property of compound B.
Nyatakan satu sifat fizik bagi sebatian B. .......
[1 mark][1 markah]
(iv) Write a balance chemical equation to represent the formation of compound B.Tuliskan satu persamaan kimia yang seimbang untuk mewakili pembentukan sebatian B.
...[2 marks]
[2 markah]
H Cl ClK
+ -
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4 Diagram 4.1 shows the apparatus used in the titration process between an aqueous potassium hydroxide solution and dilute sulphuric acid using indicator A. Rajah 4.1 menunjukkan proses pentitratan antara larutan akueus kalium hidroksidadengan asid sulfurik cair dengan menggunakan penunjuk A.
Diagram 4.1 Rajah 4.1
(a) Name Namakan:
(i) Apparatus P Radas P : ....................................................................................................
(ii) Indicator A Penunjuk A : ....................................................................................................
[2 marks][2 markah]
(iii) Based on answer in (a)(ii), state the colour change of the solution in conicalflask at the end point. Berdasarkan jawapan di (a)(ii), nyatakan perubahan warna larutan dalamkelalang kon pada takat akhir.
..............................................................................................................................[1 mark]
[1 markah]
25.0 cm of 1.0 mol dm- potassiumhydroxide solution25.0 cm3 larutan kalium hidroksida1.0 mol dm-3
25.0 cm of 1.0 mol dm- potassium hydroxidesolution + indicator A25.0 cm3 larutan kalium hidroksida 1.0 moldm-3 + penunjuk A.
Apparatus P Radas P Dilute sulphuric acid
Asid sulfurik cair
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(b) (i) Write a balanced chemical equation for the reaction between potassiumhydroxide solution with sulphuric acid.Tulis persamaan kimia yang seimbang bagi tindak balas antara larutankalium hidrosida dengan asid sulfurik.
..............................................................................................................................[2 marks]
[2 markah]
(ii) In this experiment, 10.00 cm3 of dilute sulphuric acid was needed to neutralisecompletely 25.0 cm3 of 1.0 mol dm-3 potassium hydroxide solution.Calculate the molarity of the dilute sulphuric acid. Dalam eksperimen ini,10.00 cm3 asid sulfurik cair diperlukan untukmeneutralkan dengan lengkap25.0 cm3 larutan kalium hidroksida 1.0 mol dm-3. Hitung kemolaran asid sulfurik cair.
[2 marks][2 markah]
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(c) Table 4.2 shows ethanoic acid, CH3COOH in three different states and theobservations that obtained when tested with moist blue litmus paper. Jadual 4.2 menunjukkan asid etanoik yang berada dalam tiga keadaan berbeza dan pemerhatian yang diperolehi apabila diuji dengan kertas litmus biru lembab.
ExperimentEksperimen
State of ethanoic acidKeadaan asid etanoik
Observation on bluelitmus paper
Pemerh atian pada kertasli tmus biru
IGlacial ethanoic acid Asid etanoik glasial
No changeTiada perubahan
IIEthanoic acid in water
Asid etanoik dalam air
Blue to red
Biru kepada merah
IIIEthanoic acid in dry propanone, Asid etanoik dalam propanon kontang
No changeTiada perubahan
Table 4.2 Jadual 4.2
(i)
Name the ion which is responsible for changing the colour of blue litmus paper to red. Namakan ion yang menyebabkan perubahan pada warna kertas litmus birukepada merah.
..............................................................................................................................[1 mark]
[1 markah]
(ii) Explain why there is no change on blue litmus paper in Experiment III.Terangkan mengapa tiada perubahan pada kertas litmus biru dalam Eksperimen III.
..............................................................................................................................
..............................................................................................................................
..............................................................................................................................[2 marks]
[2 markah]
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5 (a) What is the meaning of empirical formula? Apakah maksud formula empirik?
[1 mark]
[1 markah](b) Table 5.1 shows the result for an experiment to determine the empirical formula of
magnesium oxode. Jadual 5.1 menunjukkan keputusan bagi satu ekperimen untuk menentukan formulaempirik bagi magnesium oksida.
Description Penerangan
Mass, g Jisim,g
Mass of crucible + lid
Jisim mangkuk pijar + penutup
35.4
Mass of crucible + lid + magnesium ribbon Jisim mangkuk pijar + penutup + pita magnesium
37.8
Mass of crucible + lid + magnesium oxide Jisim mangkuk pijar + penutup + magnesium oksida
39.4
Table 5.1 Jadual 5.1
(i) Base on table, calculate the mass of Berdasarkan jadual, hitungkan jsim bagi
Magnesium : Magnesium
Oxygen :Oksigen
[1 mark][1 markah]
(ii) Calculate the mole ratio of magnesium atoms to oxygen atoms. Hitungkan nisbah mol bagi atom magnesium kepada atom oksigen.[Relative atomic mass: O = 16, Mg = 24][ Jisim Atom Relatif: O = 16, Mg = 24]
[2 marks][2 markah]
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(v) Determine the empirical formula of magnesium oxide. Hitungkan formula empirik magnesium oksida.
.. [1 mark]
[1 markah]
(vi) When carrying out the experiment, why does the crucible lid need to beopened once in a while?Semasa menjalankan eksperimen ini, mengapakah penutup mangkuk pijardibuka sekali sekala.
..
..
[1 mark][1 markah]
(vii) How to ensure all magnesium has completely reacted? Bagaimana untuk memastikan semua magnesium bertindakbalas denganlengkap?
..
..[1 mark]
[1 markah](c) Draw an apparatus set-up to carry out this experiment.
Lukis susunan radas untuk menjalankan eksperimen ini.
[2marks][2 markah]
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(d) (i) State the name of another metal oxide whose empirical formula can bedetermined using the same technique. Nyatakan nama suatu logam oksida lain yang formula empiriknya bolehditentukan menggunakan teknik ini.
..[1 mark][1 markah]
(ii) State why the empirical formula of silver oxide cannot be determine by usingthe same technique. Nyatakan mengapa formula empirik bagi argentum oksida tidak dapatditentukan dengan menggunakan teknik yang sama.
..
..[1 mark]
[1 markah]
6 Diagram 6.1 shows the conversion of but-2-ene to hydrocarbon Y through Process X at180oC with the presence of nickel as a catalyst. Rajah 6.1 menunjukkan pertukaran but-2-ena kepada hidrokarbon Y melalui Proses X pada 180oC dengan kehadiran nikel sebagai mangkin.
Diagram 6.1 Rajah 6.1
(a) Name process X. Namakan proses X.
..................[1 mark]
[1 markah]
Process X Proses X
180oC/ NickelBut-2-ene But-2-ena
Y
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(b) Write the chemical equation to represent process X.Tuliskan persamaan kimia untuk mewakili proses X..
...................[1 mark]
[1 markah]
(c) 28 g of but-2ene is completely burnt in oxygen.The chemical equation below shows the combustion of but-2-ene.[Relative atomic mass: C=12, O = 16, H = 1;Molar volume of gas= 24 dm3 mol at room condition ]
28 g but-2-ena terbakar dengan lengkap dalam oksigen. Persamaan kimia di bawah menunjukkan pembakaran but-2-ena.[ Jisim Atom Relatif: C=12, O = 16, H = 1; Isi padu molar gas = 24 dm3 mol pada keadaan bilik ]
C4H8 + 6O2 4CO2 + 4 H2O
(i) Calculate the number of moles of but-2-ene burnt. Hitungkan bilangan mol but-2ena yang terbakar.
[1 mark][1 markah]
(ii) Calculate the volume of carbon dioxide gas produced. Hitungkan isi padu gas karbon dioksida yang terhasil.
[2 marks][2 markah]
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(d) Describe a chemical test to differentiate but-2-ene and hydrocarbon Y.Terangkan satu ujian kimia bagi membezakan but-2-ena dan hidrokarbon Y.
..................
..................
..................
..................[3 marks]
[3 markah]
(e) Diagram 6.2 below shows two types of rubbers, Rubber Type A and Rubber Type B. Rajah 6.2 di bawah menunjukkan dua jenis getah. Jenis Getah A dan Jenis Getah B.
Diagram 6.2 Rajah 6.2
Rubber Type A Jenis Getah A
Rubber Type B Jenis Getah B
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(i) Identify the type of rubbers A and B. Kenalpasti jenis getah A dan B.
A: .
B: .[2 marks][2 markah]
(ii) Compare the elasticity of rubber type A and rubber type B. Bandingkan keelastikan getah jenis A dengan getah jenis B.
[1 mark]
[1 markah]
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Section BBahagian B
[20marks][20markah]
Answer anyone question. Jawab mana-manasatu soalan daripada bahagian ini.
7 (a) Table 7.1 shows a series of experiment carried out to construct the electrochemicalseries. The positive terminal and value for potential difference for the pair of metals Xand copper, Cu are not given. W, X and Y are not the actual symbols of the metals.
Jadual 7.1 menunjukkan keputusan satu siri eksperimen yang dijalankan untukmembina siri elektrokimia.Terminal positif dan nilai beza keupayaan logam X dan kuprum, Cu tidak diberi. W,Xdan Y bukan simbol sebenar logam-logam itu.
Pair of metalsPasangan logam
Positive terminalTermin al positi f
Potential difference (V)Beza keupayaan (V)
W, X X 1.6
X, Y Y 0.4
W, Cu Cu 2.9
X, Cu
Table 7.1Jadual 7.1
(i) Based on the values of the potential differences, arrange the metals in ascendingorder in the electrochemical series.
Berdasarkan nilai beza keupayaan, susun logam-logam tersebut dalam tertibmenurun dalam siri elektrokimia.
[1mark][1 markah]
(ii) Predict the positive terminal and the value of potential difference for the pair ofmetals X and Cu. Explain your answer.
Ramal terminal positif dan nilai beza keupayaan untuk pasangan logam X danCu. Terangkan jawapan anda.
[3marks][3 markah]
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(b ) Diagrams 7.3 and 7.4 show the apparatus set-up used in two experiments toelectrolyse molten lead(II) chloride and 0.0001 mol dm-3 hydrochloric acid. Rajah 7.3 dan 7.4 menunjukkan susunan radas yang digunakan dalam duaeksperimen untuk menjalankan elektrolisis ke atas leburan plumbum(II) klorida danasid hidroklorik 0.0001 mol dm-3 .
ExperimentEksperimen
DiagramRajah
I
Diagram 7.3Rajah 7.3
II
Diagram 7.4Rajah 7.4
Carbon electrodes Elektrod karbon
Carbon electrodes Elektrod karbon
Lead(II) chloride Plumbum(II) klorida
0.0001 mol dm- ofhydrochloric acid Asid hidroklorik0. 0001 mol dm-3
Heat Haba
Test tubeTabung uji
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(i) Write the formulae of all ions present in both electrolytes in Experiment Iand Experiment II.Tuliskan semua formula ion yang hadir dalam kedua-dua elektrolit pada Eksperimen II dan Eksperimen II
[2 marks][2 markah]
(ii) Different products are formed at electrodes in both experiments. State the products formed at the anode of Experiment I and Experiment II. Explain how the products are formed and state the reason Write the half equations at the anodes
Hasil tindak balas yang berbeza terbentuk di elektrod pada kedua-dua ekperimen ini. Nyatakan hasil yang terbentuk di anod pada Eksperimen I dan Eksperimen II.
Terangkan bagaimana hasil ini terbentuk dan berikan sebab Tuliskan setengah persamaan di anod
[10 marks][10 markah]
( c ) Diagram 7.2 shows a voltaic cell. Metal R is situated below copper in theelectrochemical series. Rajah 7.2 menunjukkan suatu sel voltan. Logam R terletak di bawah kuprum dalam siri elektrokimia.
Diagram 7.2Rajah 7.2
State the positive terminal and negative terminal of this cell.Suggest a metal that is suitable as metal R and a solution that is suitable as solution R. Nyatakan terminal positif dan terminal negatif bagi sel ini.Cadangkan logam yang sesuai bagi R dan larutan yang sesuai untuk larutan R.
[4 marks][4 markah]
Copper Kuprum
Metal R Logam R
Copper(II) nitrate Kuprum(II) nitrat Solution R
Larutan R
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8 (a) The smaller-sized potatoes will cook faster than the bigger-sized ones.Explain why. Kentang bersaiz kecil masak lebih cepat daripada bersaiz besar.Terangkan mengapa.
[4 marks][4 markah]
(b) A group of students carried out two experiments to investigate the factor affectingthe rate of reaction between zinc powder and hydrochloric acid, HCl.Diagram 8 shows the set-up of apparatus used in the experiments.Sekumpulan pelajar menjalankan dua eksperimen untuk mengkaji faktor yangmempengaruhi kadar tindak balas antara serbuk zink dengan asid hidroklorik, HCl. Rajah 8 menunjukkan susunan radas yang digunakan dalam kedua-dua eksperimenitu.
Diagram 1 Rajah 1
ExperimentEksperimen
Apparatus set-upSusun an radas
Volume of hydrogen gasreleased in the first 2 minutes
I si padu gas terbebas dalammasa 2 min it per tama
I
II
100 cm of0.1 mol dm-3 HCl
Zinc powder + substance XSerbuk zink + bahan X
100 cm of0.1 mol dm-3 HCl
Zinc powderSerbuk zink
40 cm of gas40 cm3 gas
60 cm of gas60 cm3 gas
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(i) In the presence of substance X in Experiment II, the higher volume of gas isreleased in the first 2 minutes compared to Experiment I.State one substance that can be used as substance X. Dengan kehadiran bahan X dalam Eksperimen II, isi padu gas yang terbebasdalam dua minit pertama adalah lebih tinggi. Nyatakan satu bahan yang boleh digunakan sebagai bahan X. [1 mark]
[1 markah]
(ii) Calculate the average rate of reaction in Experiment I and Experiment II in thefirst 2 minutes. Hitung kadar tindak balas purata bagi Eksperimen I dan Eksperimen II dalammasa 2 minit pertama .
[2 marks][2 markah]
(iii) Compare the rate of reaction between Experiment I and Experiment II.Explain your answer based on collision theory. Banding kadar tindak balas antara Eksperimen I dan Eksperimen II. Jelaskan jawapan anda berdasarkan kepada teori perlanggaran.
[5 marks][5 markah]
(iv) Sketch a graph of volume of the gas released against time for both sets ofexperiments in the first 2 minutes. Lakar graf isi padu gas terbebas melawan masa bagi kedua-dua set eksperimen
dalam masa 2 minit pertama. [2 marks][2 markah]
(v) Write an ionic equation for the reaction between zinc powder and hydrochloricacid.Tulis persamaan ion bagi tindak balas antara serbuk zink dan asid hidroklorik.
[2marks][2 markah]
(vi) Hydrochloric acid in Experiment I is replaced with sulphuric acid with the samevolume and concentration. Compare the rate of reaction and the maximumvolume of hydrogen gas released between these two experiments.Explain your answer. Asid hidroklorik dalam Eksperimen I digantikan dengan asid sulfurik yangmempunyai isi padu dan kepekatan yang sama. Bandingkan kadar tindak balasdan isi padu maksimum gas hidrogen yang terbebas antara kedua-duaeksperimen ini.Terangkan jawapan anda.
[4 marks][4 markah]
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Section CBahagian C
[20marks][20markah]
Answer anyone question. Jawab mana-manasatu soalan daripada bahagian ini.
9 (a) The chemical equation below shows a redox reaction. Persamaan kimia berikut menunjukkan tindak balas redoks.
Mg(s) + CuSO4(aq) Cu(s) + MgSO4(aq) Mg(p) + CuSO4(ak) Cu(p) + MgSO4(ak)
Explain the redox reaction in terms of change in oxidation number.Terangkan tindak balas redoks yang berlaku dari aspek perubahan nombor pengoksidaan. [4 marks]
[4 markah]
(b) An experiment is carried out to determine the position of metals L, M and copperin the reactivity series.Diagram 9 shows the results of the experiment.Satu eksperimen dijalankan untuk menentukan kedudukan logam L, logam M dankuprum dalam siri kereaktifan. Rajah 9 menunjukkan keputusan bagi eksperimen tersebut.
Experiment Eksperimen
I
L + copper(II)oxide L+ kuprum(II)oksida
II
M + copper(II)oxide M + kuprum(II)oksida
III
M + L oxide M + oksida L
. Observation Pemerhatian
Black powderturns brownSerbuk hitammenjadi perang
Black powder turns brownSerbuk hitammenjadi perang
No changeTiada perubahan
Diagram 9 Rajah 9
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Based on the results in the experiment, arrange the three metals in order of increasingreactivity toward oxygen. Explain your answer. Bedasarkan kepada keputusan dalam eksperimen itu, susun tiga logam tersebutmengikut turutan menaik kereaktifan terhadap oksigen. Terangkan jawapan anda.
[6 marks][6 markah](c) You are required to investigate the oxidation and reduction in the displacement of
halogens from its halide solution. The chemicals provided are;
potassium chloride solution potassium bromide solution potassium iodide solution chlorine water bromine water iodine solution 1,1,1 trichloroethane
Describe a laboratory experiment to compare the ability of halogens as oxidizingagent. In your description include
procedure observation ionic equation
[10 marks]
Anda dikehendaki menyiasat pengoksidaan dan penurunan dalam tindak balas
penyesaran halogen daripada larutan halidanya. Bahan-bahan kimia yang dibekalkanialah;
larutan kalium klorida larutan kalium bromida larutan kalium iodida air klorin air bromin larutan iodin 1,1,1 trikloroetana
Huraikan satu eksperimen makmal untuk membandingkan keupayaan halogen sebagai agen pengoksidaan. Dalam huraian anda, sertakan prosedur, pemerhatian persamaan ion
[10 markah]
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(ii) Diagram 10 shows a solution in a bottle. Rajah 10 menunjukkan satu larutan dalam sebuah botol.
Diagram 10 Rajah 10
Describe a chemical test to confirm the anion that present in thesolution. Huraikan satu ujian kimia untuk mengesahkan anion yang hadir dalamlarutan itu.
[4 marks][4 markah]
(c) You are required to prepare a dry zinc sulphate salt. The chemicals supplied are: Anda dikehendaki menyediakan garam zink sulfat yang kering. Bahan kimia yang dibekalkan ialah:
Zinc nitrate solution Larutan zink nitrat
Dilute sulphuric acid Asid sulfurik cair
Sodium carbonate solution
Larutan natrium karbonatDescribe a laboratory experiment to prepare the salt. In your description,include the chemical equations involved. Huraikan satu eksperimen makmal untuk menyediakan garam tersebut. Dalam huraian anda, sertakan persamaan yang terlibat.
[10 marks][10 markah]
END OF QUESTION PAPERKERTAS SOALAN TA M AT
Lead(II)nitrate
Plumbum(II)nitrat
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INFORMATION FOR CANDIDATESMAKLUMAT UNTUK CALON
1 This question paper consists of three sections:Sections A , SectionB and SectionC. Kertas soalan ini mengandungi tiga bahagian:Bahagian A, B ahagian B danBahagian C.
2 Answerall questions inSection A . Write your answers forSection A in the spaces provided inthe question paper.
Jawabsemua soalan dalamBahagian A. Jawapan anda bagiBahagian A hendaklah ditulisdalam ruang yang disediakan dalam kertas soalan
3 Answer anyone question fromSection B and anyone question fromSection C .Write your answers forSection B andSection C on the helaian tambahan provided by theinvigilators. You may use equations, diagrams, tables, graphs and other suitable methods to
explain your answers. Jawab mana-manasatu soalan daripadaBahagian B dan mana-manasatu soalan daripadaBahagian C . Tulis jawapan anda bagiBahagian B danBahagian C dalam helaian tambahan yang dibekalkan oleh pengawas peperiksaan. Anda boleh menggunakan persamaan, rajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda.
4 The diagrams in the questions are not drawn to scale unless stated. Rajah yang mengiringi soalan tidak dilukiskan mengikut skala kecuali dinyatakan
5 Marks allocated for each question or part question are shown in brackets.
Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan dalam kurungan6 Show your working. It may help you to get marks.
Tunjukkan kerja mengira.Ini membantu anda mendapatkan markah.7 If you wish to change your answer, cross out the answer that you have done. Then write down the
new answer.Sekiranya anda hendak menukar jawapan, batalkan jawapan yang telah dibuat. Kemudian tulis jawapan yang baru.
8 The Periodic Table of Elements is provided. Jadual Berkala Unsur disediakan.
9 You may use a non-programmable scientific calculator. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.
10 You are advised to spend 90 minutes to answer questions inSection A , 30 minutes forSection Band 30 minutes forSection C .Anda dinasihati supaya mengambil masa90 minit untuk menjawab soalan dalamBahagian Aialah 90 minit, 30 minit untukBahagian B dan 30 minit untukBahagian C .
11 Hand in your answer sheets at the end of the examination.Serahkan semua kertas jawapan anda di akhir peperiksaan.
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Nama: . Tingkatan: .
BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUHDAN SEKOLAH KECEMERLANGAN
KEMENTERIAN PELAJARAN MALAYSIA
PENTAKSIRAN DIAGNOSTIK AKADEMIK SBP 2012
SIJIL PELAJARAN MALAYSIA
CHEMISTRY
Kertas 3
1 JAM 30 MINIT
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
Arahan:
1. Kertas soalan ini adalah dalam dwibahasa.2. Soalan dalam bahasa Inggeris mendahului soalan
yang sepadan dalam bahasa Melayu.3. Kertas soalan ini mengandungi 2 soalan struktur
dan 1 soalan esei .4. Calon dikehendaki membaca maklumat di halaman
belakang kertas soalan ini.5. Jawab soalan 1 dan 2 di ruangan yang disediakan.
Kertas soalan ini mengandungi 14 halaman bercetak
Untuk Kegunaan Pemeriksa Soalan Markah
PenuhMarkah
Diperoleh
1 27
2 6
3 17
Jumlah 50
SULIT4541/3CHEMISTRYKertas 3Ogos20121jam 30 minit
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SULIT 2 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
1. Diagram 1.1 shows the apparatus set-up to carry out an experiment to comparethe hardness of bronze and its pure metal, copper.
Rajah 1.1 menunjukkan gambarajah susunan radas untuk membandingkankekerasan gangsa dengan logam tulennya, kuprum.
Diagram 1.1 Rajah 1.1
The experiment was carried out according to the following steps: Eksperimen itu dijalankan mengikut langkah-langkah berikut:
Step 1
Langkah 1
Cellophane tape was used to stick a steel ball bearing onto thecopper block.
Pita selofen digunakan untuk melekatkan bebola keluli di atasbongkah kuprum.
Step 2
Langkah 2
A 1.0 kg weight was hanged at a height of 50 cm above the ball bearing as shown in Diagram 1.1. Pemberat 1.0 kg digantung pada ketinggian 50 cm di atas bebolakeluli seperti yang ditunjukkan dalam Rajah 1.1.
Step 3
Langkah 3
The weight was dropped so that it hit the ball bearing.
Pemberat itu dijatuhkan ke atas bebola keluli tersebut. Step 4
Langkah 4
The diameter of dent made on the copper block was measured andthe reading was recorded.
Diameter lekuk yang terbentuk pada bongkah kuprum diukur danbacaannya direkodkan.
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4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
Step 5
Langkah 5
Step 1 to step 4 was repeated twice on the other parts of the samecopper block to get another dents.
Langkah 1 hingga 4 diulang sebanyak dua kali di atas bahagianlain bongkah kuprum untuk mendapatkan lekuk yang lain.
Step 6
Langkah 6
Step 1 to step 5 was repeated by replacing the copper block withthe bronze block.
Langkah 1 hingga 5 diulang dengan menggantikan bongkahkuprum dengan bongkah gangsa.
Diagram 1.2 shows the shape of dents formed for the experiment. Rajah 1.2 menunjukkan lekuk yang terbentuk bagi eksperimen itu.
Diagram 1.2 Rajah 1.2
Copper block Blok kuprum
Steel ball bearing Bebola keluli
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SULIT 4 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
Table 1.1(a) shows the three dents formed on the copper block. Jadual 1.1(a) menunjukkan tiga lekuk yang terhasil di atas bongkah kuprum.
SetsSet Diagram of the dents formed Rajah lekuk yang terbentuk.
Diameter of thedent (cm)
Diameter lekuk
(cm)
I ...................
II ...................
III .....................
Table 1.1(a) Jadual 1.1(a)
Copper block Blok kuprum
Ruler Pembaris
Copper block Blok kuprum
Ruler Pembaris
Copper block Blok kuprum
Ruler Pembaris
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SULIT 5 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
Table 1.1(b) shows the three dents formed on the bronze block. Jadual 1.1(b) menunjukkan tiga lekuk yang terhasil di atas bongkah gangsa.
SetsSet Diagram of the dents formed Rajah lekuk yang terbentuk.
Diameter of thedent (cm)
Diameter lekuk(cm)
I .....................
II .....................
III .....................
Table 1.1 (b) Jadual 1.1(b)
Bronze block Blok gangsa
Ruler Pembaris
Bronze block Blok gangsa
Ruler Pembaris
Bronze block Blok gangsa
Ruler Pembaris
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SULIT 6 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
(a) By using a ruler given, measure the diameter of dents and record in Table 1.1(a)and 1.1(b). Dengan menggunakan pembaris yang diberikan, ukur diameter lekuk dancatatkan dalam Jadual 1.1(a) dan 1.1(b)
[3 marks][3 markah]
For examinersuse1(a)
(b) Construct a table to record the diameters and the average diameter of dents oncopper and bronze blocks.
Bina satu jadual untuk merekod diameter lekuk-lekuk dan purata diameter lekuk pada bongkah kuprum dan bongkah gangsa.
[3 marks][3 markah]
1(b)
(c) (i) State one observation that can be obtained from both experiments. Nyatakan satu pemerhatian yang dapat diperoleh daripada kedua-duaeksperimen ini.
.
.
.[3 marks]
[3 markah]
1(c)(i)
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4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
(ii) What is your inference based on your answer in (c)(i). Apakah inferens berdasarkan jawapan anda dalam (c)(i).
[3 marks]
[3 markah]
For examinersuse
1(c)(ii)
(iii) The average diameter of dents of bronze block is different from the copper block due to the arrangement of particles. Explain why. Purata diameter lekuk blok gangsa adalah berbeza dengan blok kuprumdisebabkan oleh susunan zarah-zarah. Terangkan mengapa.
.
.
.[3 marks]
[3 markah]
1(c)(iii)
(d) For this experiment, state : Bagi eksperimen ini, nyatakan :
(i) The manipulated variable Pemboleh ubah dimanipulasikan
...(ii) The responding variable
Pemboleh ubah bergerak balas
......................... .(iii) The fixed variable
Pemboleh ubah dimalarkan
[3 marks]
[3 markah]
1(d)
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SULIT 8 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
(e) (i) State one hypothesis for this experiment Nyatakan satu hipotesis bagi eksperimen ini.
.
.
.[3 marks]
[3 markah]
For examinersuse
1(e)(i)
(ii) State the operational definition for the hardness of materials in theexperiment
Nyatakan definisi secara operasi bagi kekerasan bahan dalam eksperimenini.
.
.
.[3 marks]
[3 markah]
1(e)(ii)
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SULIT 9 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
(f) The following is a list of substances: Berikut ialah senarai beberapa bahan:
For examinersuse
Iron Steel Chromium Besi Keluli Kromium
Brass Pewter Tin Loyang Piuter Timah
Classify these substances into alloy and pure metal. Kelaskan bahan-bahan ini kepada aloi dan logam tulen
[3 marks][3 markah]
1(f)
TOTAL
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SULIT 10 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
2
Diagram 2 Rajah 2
Diagram 2 shows the apparatus set-up for experiment to determine the heat ofcombustion of methanol. 200 cm 3 of water is used in this experiment. Theexperiment was repeated twice by using ethanol and propanol to replace methanol.
Rajah 2 menunjukkan susunan radas bagi eksperimen untuk menentukan haba pembakaran metanol. 200 cm 3 air digunakan dalam eksperimen ini. Eksperimen
telah diulang sebanyak dua kali dengan menggunakan etanol dan propanol untukmenggantikan metanol.
For examinersuse
Graph 2 shows the heat of combustion of alcohols against the number of carbon atom per molecule of alcohols from the experiment.Graf 2 menunjukkan haba pembakaran bagi alkohol melawan bilangan atom karbon
per molekul daripada eksperimen itu.
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SULIT 11 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
Graph 2Graf 2
(a) Based on Graph 2, predict the heat of combustion of butanol. Berdasarkan Graf 2, ramalkan haba pembakaran butanol.
..[3 marks]
[3 markah]
2(a)
Number of carbon atom per molecule of alcohols Bilangan atom karbon per molekul alkohol
Heat of combustion/ kJ mol -1 Haba pembakaran/ kJ mol -1
4
500
1000
1500
2000
2500
3000
3500
3210
For examiners use
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SULIT 12 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
(b) Table 2 shows the fuel value of alcohols. It also shows the time needed forcooking the same type of food.
Jadual 2 menunjukkan nilai bahan api alkohol. Ia juga menunjukkan masa yang diperlukan untuk memasak makanan yang sama.
For examinersuse
AlcoholsAlkohol Fuel value (kJg-1
)Nil ai bahan api (kJg -1 ) Time for cookingM asa un tuk memasakMethanol 22.75 Slow
Ethanol 29.91 Medium
Propanol 33.60 Fast
Table 2 Jadual 2
State the relationship between the type of alcohols and time needed for cooking. Nyatakan hubungan di antara jenis alkohol dengan masa yang diperlukan untukmemasak.
..
..[3 marks]
[3 markah]
2(b)
TOTAL
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SULIT 13 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
3. Diagram 3 shows one method used to prevent the rusting of iron. Rajah 3 menunjukkan satu kaedah mencegah pengaratan besi.
Diagram 3 Rajah 3
Table 3 shows the observations when iron is in contact with different type of metals for a fewdays.
Jadual 3 menunjukkan pemerhatian apabila besi bersentuhan dengan logam-logam yangberbeza selama beberapa hari.
Metal in contact with iron Logam yang bersentuhan dengan besi
Observation Pemerhatian
Metal R Logam R
Blue colour is formedWarna biru terbentuk
Metal S Logam S
Pink colour is formedWarna merah jambu terbentuk
Table 3 Jadual 3
Based on above information, plan one experiment to investigate the effect of other metals on therusting of iron.
Berdasarkan maklumat di atas, rancang satu eksperimen untuk mengkaji kesan logam-logamlain ke atas pengaratan besi.
Metal bars
Bar magnesium
Wayar penyambung
Batang paip besi
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SULIT 14 4541/3
4541/3 2012 Hak Cipta BPSBPSK [Lihat halaman sebelahSULIT
Your planning should include the following aspects; Perancangan anda mestilah meliputi aspek-aspek berikut;
(a) Problem statement Pernyataan masalah
(b) All the variablesSemua pemboleh ubah
(c) Statement of the hypothesis Pernyataan hipotesis
(d) List of substances and apparatusSenarai bahan-bahan kimia dan alat radas
(e) Procedure