SULIT 454lll PROGRAII PENINGKATAN PRESTASI AKADEMIK SPM TAHUN 2412 CHEMISTRY Kertas 1 Satu jam dan lima belas minit 1. 2. 3. JANGAN BUKA KERTAS SOATAN INI SEHINGGA DIBERITAHU Kertas soalan ini adalah dalam dwibahasa Soalan dalam bahasa lnggeris mendahului soalan yang sepadan dalam bahasa Melayu Calon dikehendakimembaca maklumat dihalaman belakang kertas soalan ini. [Lihat sebelah SULIT 4vut Kertas soalan ini mengandvngi 24 halaman bercetak j*k http://www.chngtuition.blogspot.com http://www.chngtuition.blogspot.com
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SULIT 454lll
PROGRAII PENINGKATAN PRESTASI AKADEMIKSPM
TAHUN 2412
CHEMISTRY
Kertas 1
Satu jam dan lima belas minit
1.
2.
3.
JANGAN BUKA KERTAS SOATAN INI SEHINGGA DIBERITAHU
Kertas soalan ini adalah dalam dwibahasa
Soalan dalam bahasa lnggeris mendahului soalan yang sepadan dalam bahasa Melayu
Calon dikehendakimembaca maklumat dihalaman belakang kertas soalan ini.
Which of the following substances is a soluble salt?Aruara balnn berilwt , yang monakah goram terlarutkan ?
Sodium chloride, NaClNatrium Horida,NaClBarium sulphate, BaSO+Barium sulat, BaSOIPotassium nitrate, KNO3Kalium nitru, KNOrtf,ad 0I) carbonate, PbCO3P I u mb u m(Il) ka rb o nat, PbCOr
I and llI and tIIII and IIIII and IV
Diagram 4 shows a type of material used to make buildings.Rajah4 merunjukkan sejenis bahanyang untuk membina bangtnan
CementSimen
SteelwiresWayar keluli
Diagram 4
What arr the characteristics of the material?Apakah ciri<iri bahon tersebuf?
A High tensile snengthKe hratan re gang(m yang t inggi
B Hard and brittleKeras dan rapuh
C High boiling point and melting pointTakat didih dan takat lebur yang tingi
D Capable to conduct electricityKe bo le hm me ngla nduks i kan el e Hri k
9 Which ofthe following explains the meaning of effective collision?Antqra berihtt, yang manakah mererangkan maksud perlanggaran berkesan?
A The coltision where its energy is less than the activation energJP erlanggaran yang mempwryai tenaga kurang daripada tenaga pengalctifan
B The collision that has a low energyPerlongaranyang mempunyat terurya yang rendah
C The collision which takes place before a reactionPerlangaranyang berlaka sebelum tindak balas
D The collision that causes a rcactionPerlanggaran yang menghasilkan tindak balas
l0 Which of the homologous series is a saturated hydrocarbon?Antara siri homolog berikat, yang manakah hidrokarbon tepu?
A AlcoholAlkohol
B AlkenesAlkena
C AlkanesAlkana
D Carboxylic acidAsid ksrbokcilik
11 The following information is about the effect of magnesium towards the rustingof iron.MaHumat berikut adalah tentang kesan magnesiarn terhadap pengaralan besi.
Magnesium that is in contact with iron will protect iron from rustingMagnesium yang bersennhan dengan besi aknn melindungi besi daripada berkarol
Which of the following explains the statement?Antara berihut, yang monakah merupakan perrersngan bagi pernyataan itu?
A Magnesium is softer than ironMagnesium lebih lembut doripada besi
B Magnesium is a good heat conducforMagnesium adalah kandufuor luboyang baik
C Magnesium has a lower melting pointMagnesium mempunyai nkat lebur yang lebih rendoh
D Magnesium is more tendency to release electronsMagnesium lehih cenderzng untuk membebaskon elelaron
15 firc molecular formula of hexene is CeHrz.Which of the following has the same empirical formula as hexene?Formula molehtl bagi hekseno adalah Cellrz.Ma*ah antara berifut mempunyaiformula empirikyang sama dengan heksena?
A CsHroB CsHrzC CeHo
D C6FI1a
16 Potassium is situated in the same group as sodium in the Periodic Table.Which of the following statements is true abut the element potassium?Kalium beroda di dalam htmpulot yang sama dengan ruilrium di dalamJahsl Berkala.Anlffo pernyalaon berihtt, yangmaru, benar ten angunsur kalium?
A Reacts with waler to produce acidic solutionBertindak balas dengan air menglnsilkan lanttan berasid.
B React with chlorine gas to produce a black solid.Bertirdok balas dengan gas Horin menglnsilkan Fpej al hitam.
C Potassium has several oxidation numbers.Kal ium me mpunyai be berapa wmbor pengo ksidaan
D Potassium has low melting point and boiling point.Kalium mempunyai takat lebur don takat didihyang rendah.
17 Which of the following are the properties of sodium oxide?Antara berihtt , yarg manakah sifu-sifu Mtium oksida?
I Low melting pointMempwryai takat lebur rendah
ll Insoluble in waterTidak urlarutkmt dalatn air
tII lnsoluble in organic solventTidak terlarutlwn dalanr pelarut organik
ry Decomposes to its constituent element by electrolysis in molten staleTerurai kepada unsur juzubtya melalui elektrolisis dalan bentuk leburan
l8 Diagram 6 shows the apparatus set-up for an electrolyic cell.Rajah 6 menunjukkan susundn radas bagi sebuah sel elektrolisis.
Carbon electrodeElektrod karbon
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Carbon electrodeElehrod karbon
Copper(ll) sulphate solutionLaru t an kup ru m(ll) s u Ifu t
Diagram 6
Which of the following ions are atkacted to anods and cathode?Yang manakah antara ion-ion berilut tertarilc ke anod dan karcd ?
AnodeAnod
CathodeKolod
A SOa'- Cu'B Cu2* OHc SO,'-. 0H- Cu'-, Fl-D lu'-. H SO4'-, OH-
19 Which ofthe following is not a chemical properfy of acids?Antarayang berilcut, yang manakah bu*an sifat kimia bagi asid?
A Reacts with magnesium carbonate to produce salt, water and carbon dioxideBertindak balas dengan magrresium karbonat untuk menghasilkan garern, airdan karbon dioksida
B Reacts with copper metal to produce salt and hydrogen gas
Bertindak balas dengan logam kupram untuk menghasillean garam dan hidrogenC Reacts with zinc oxide to ploduce salt and water
Bertindalc balas &ngan zink oksido antuh menghasilkan garam dan airD Reacts with alkali to produce salt and water
Bertindak balas dengan alkali untuk menghasilkan garam dan air
22 The following equation shows the reaction between calcium carbonate, CaCO:and hydrochloric acid" HCl.Persomaan berikul menunjukkon tindak balas antarq serbuk kalsium karbonal,CaCOr dan a.sid hidroHorik, HCl.
CaCOn'y + ZHCl1"qy + CaClqay +COz@ + HzQu
Which of the following is the suitable method to determine the rate of rcaction?Antara yang berikut, yang nanakah merupakan lraedah yang sesuai urdukmeneuuksn kadar tindak bslas?
A Change in the temperature of the solution with timePerubahan suhu larutan dengan masa
B Change in the volume ofcarbon dioxide gas with timePerubahan isipadu gas lmrbon dioksida dengan masa
C Change in the mass of water with timePerubahon jisim air dengan masa
D Change in the concrntration ofhydrochloric acid with timePerubahan kepekaton asid hidroHorik dengan rnasa
23 Alkane can bs produced from the hydrogenation of alkene.Name the catalyst used in this reaction.Alkana dapat dihasitkan daripado tindak balas penghidrogenan alkerwNarnakan mangfrinyang digunakan di dalam tindak balan ini.
24 Which of the following are oxidisingagents?Antora berilat yang nstahah agen pengoksidaon?
I MagnesiumMagnesium
il Chlorine waterAir Horin
til Potassium iodide solutionLarutan kalium iodida
ry Acidified potassium manganat{Vll) solutionLarutan kalium msngg@at (WI) berasid
A I and II onlyB lI and IV onlyC I,II and III onlyD I, II and IV only
25 The following equation shows the reaction between silver nitrate solution , AgNO3and sodium chloride solution, NaCl.Persamaan berihat mew4iuF,kan tindak bala.t antara lat*an argentum nitrd,AgNO3 dan larutan rwriun Horida,NaCl
Which ofthe following is true ebout thc heat change and type ofreaction for&echemical equation?Antara berilad yang monakoh beno nengenai perubahan lwba danjenis tindokbalas bagi Wrsamcum kimia ini ?
Heat changePerubahsthaba
Type of reactionJenis tinda* balas
Heat is releasedHaba dibebaslwn
Endothermic
Heat is releasedHaba dibebaskmr
Exothermic
Heat is absorbedHaba disero Exothermic
Heat is absorHHaba diseran
Endothermic
26 Which quation rcpresents a rcaction of saponification?Persam.aan manakah tnewakili tindak balas saponifrkasi ?
A Acid + Alkali -+ salt + wsterAsid+Alkali+gwan+aii
B Alcohol + Carbo:rylic acid ---r ester + waterAlkolwl + Asid kobsilih+ ester * air
C Fats + Alkali -' Fatty acid salt + GlycerolLemak + Alkoli 4 garcm, asid lemak + gliserol
27 Tablc I shows the proton number and the number of electrons in four differentparticles. The letter used is not the asatral symbol of the elements.Jadual I merunjuk*antwmbor prolon dan bilangan elekron dolam empat zarah.
Hunrf yang digurukan bakan simbol yang sebens.
ElementUnsur
Proton numberNombor oroton
Number of electronBilansan elebron
P t7 t7
a t7 l8
R t2 t0
s 8 I
Table I
Which is an anion?Yang manakah suatu qion?
AP
BaCR
DS
28 Which substance contains the same number of atoms as in 12 g ofcarbon?
[Relative atomic mlss: He = 4, C = l2,O = l6n lfr/rg= 24, Al : 27, I mole ofanygas occupies 24 dm3 at room conditionJBalnn moukah mengandangi biloryan atam yang sama dengan 12 g karbon?
3l Diagram 9 shows the apparatus set-up used to elechoplate iron spoon with silver.Rajah 9 menunjukkan susunan radas untuk menyadur sudu besi dengan orgentum.
t5
32
Iron spoonSudu besi
What is observed at the anode and cathode after 30 minutes?Apakah pemerlwtian di anod dan di tatad selepas 30 minit?
Alkali Y of concentration I mol dm-3 has a pH of 8.
Which statement is true abut alkali Y?Atkati Y dengan kepekatan I mol dm'3 m empunyai pH 8.
Pernyataan manahah yang benar tentong alkali Y2
I lnsoluble in waterTidsklsut dalamair
il Reacs with a weak acidBertindak balas dengan asid lemah
ru The degree of ionisation in water is higlrDarjah pengionan dalam air adalah tinggi
ry Has a low concentralion of hydroxide ionsMempurzyai kepfutan ion hi&oksidayang rendoh
I and IIII and IIII and tVII and IV
Silver ptrate
Plat argentum
Silver nitrate solutionLtutqn argentum nitral
pihaf scbelahST'LIT
ABcD
Diagram 9
AnodeAnod
CathodeKatod
A Silver plate becomes thinnerPlat arsentum semakin niois
Silvery deposit fonnedMendakan berwarna perak terbewuk
B Silvery deposit formedMendakon berw arna perak
terbentuk
Gas bubbles releasedGelembung gas terbebas
C Silver plate becomes thinnerPlat arsentum semakin nipis
33 L)iagranr l0 shows some reastion of zinc compounds.Which changes is made by adding an acid?Rajah lA menwjukkan sebahogian tirdak balas ymg melibatkan sebatian zinkAntara perubahan lersebut yang manakah berlafu dengat penanbahan asid 2 '
Zinc carbonateZink karbonat
Zinc oxideZink oksida
A UreaUrea
Zinc sulphateZink sulfat
)--.
Diagram 10
34 The fcllowing equation is a reaction to prepare a synthethic fertilissr, Z.
Persamasn beriktt adatah tindakbslas untuk menyediafum baja sintelih Z.
Ammonia +Y + Z
Which ofthe following is Y?Manakah antara berikut adalahY?
35 In an experiment,25 cm3 of 0.2 mol dm-3 hydrogen peroxide solutiondecomposes to produce oxygen gas. Graph of volume of oxygen gas against timeis sketched and curve R is obtained as shown in Diagram I IDalam satu eksperimen, 25 cm3 0.2 mol dm'3 larutan hidrogm peroluida teruraimenghasilkan gos olcsigen. Graf isipadu gas oksigen melmsan masa dilakarkan danlenglangR terhasil seperti ditunjukkan dalarn Rajah ll
Volume of oxygen gaV cm3kipadu gas oksigen / cm3
Time/ sMasal s
Diagram I I
Which ofthe following solution will produce curve S?Yang manakah di antara larutan herika okan menghasilkan lengkung S?
36 Ester is a carbon compound that can be derived from the reaction between alcohol andcarboxylic acid. Diagram 12 shows the structure of an ester.Ester ialah satu sebatior karbon yang diterbitkan dtrii;da tindak balas antara alkphol danasid karholsilik. Rajah 12 menunjukkan struktur suatu ester.
oil
CHr-CHz-C-O-CHg
Diagnm 12
Which of the alcohol and carboxylic acid used to form the ester?Yang manakah allcohal dan asid karboksilik yang digunolmn bagi membentuk ester inr2
AlcoholAlcohol
Carboxylic AcidAsid korbosilik
A MethanolMetanol
Ethanoic AcidAsid etanoik
B EthanolEtanal
Ethanoic acidAsid Etonoik
c EthanolEtarai
Propanoic acidAsid Propanoik
D MethanolMetanal
Propanoic acidAsid Propanoik
37 Diagram 13 shows the set up of the apparatus of a simple chemical cell.Rajoh 13 menunjukkan susurwn radas bogi sotu sel kimia ringkas.
t8
Zinc platePIat zink
Silver plarePlat argentum
Silver nitrate solutionLorutan argentum nitral
Diagram 13
Which half equations represent rcaction @curs at silver plate?
Antara berikut, setengah per.iamctan manakah mewakili tindak balas yongberlaku di kepingan argentum?
40 Table 2 shows the subatomic particles of P and Q.Jadual2 menu4jukhan zarah-zarah subatom bagi P danQ
Neutron ProtonP 6 5
a 5 5
Table2
It shows that P and QIni menunjuk*an? danQ
I are both positively chargedacblah bercas po,ritif
II have the same nusleon numbermempunyai nombor rruHeonyang sama
Iil have the same number of elechonsmempunyai bilangan elektran yang sama
IV are particles of the same elementsadalah unsur yang sama
A I and II onlyB II and III onlyC II and lV onlyD III and IV only
4l The following equation shows the reaction between magnesium and hydrochloricacid.Persamaan berikut menunjukkan tindak balas antara magnesium fun asidhidroHorilc
M&rl + 2HCl tuql ) MgCl2("ol + HzGl
What is the volume of hydrogetr gff, H2 prroduced if 0.05 mol of hydrochloricacid rpact with excess magnesium ribbon at standard temperature and pressurc
(srP)?[Molar volume of gas at STP :22.4 dm3mol-r]
Apakah isipadu gas hidrogen,H2 yang terhasil jika 0.05 mol asid hidroHorikbertindakbalas dengan pita magnesium berlebilnn pada suha dan tekanqtpiawai (STP)?
42 Gas X is used in airships and weather balloons because of its low density.Gas X isGas X diganakan dala n kapal udara dan belon kajicuaca disebabkan ketumpatannyayang rendah. Gas Xadalah
A HeliumB NeonC ArgonD Krypton
43 The following equation shows the formation of magnesium oxide.Persamaan berikut men unj ukkan pem bentukan magnesi um oksida.
2Mg '1Oz * 2MgO
What is the relative formula mass ofthe compound, magnesium oxide?Apakah jisim formula relatd bagi sebatiut magnesium oksida tersebut ?
[Relative atomic mass : Mg=24; O :16]
U Table 3 shows information about two voltaic cells.Jadual 3 memmjufr*an maHumat tentang dua sel kimia .
Table 3
What is the potential diflbrence between metal Q and R?Apafra], bezo kcupayaan di urtara logatn Q danR?
45 The equation shows the reaction between sulphuric acid and potassium hydroxide.Persanaan di bawah menunjuft:lcon tindafi:balas antara asid sulfurik dan kaliumhidroksida.
HISO* + 2KOH -'* trGSOr + 2I12O
What is the volume of 0.1 mol dmi potassium hydroxide solution which canneutralise 20.0 cm3 of 0.1 mol dm-3 sulphuric acid?Berqakah isipadu larutan kalium hidroksida 0.i mol dm'3 yang diperlakan unnkmeneutralkar 20.0 cm3 0.1 mol dn-3 asid sutfurik'l
A 10.0 cm3
B 20.0 cm3
C 40.0 cm3
D 80.0 cm3
46 The following equation shows a double decomposition reaction.Persamaan berikut menunjuk*an tindak balas pengwaian ganda dua.
Pb{NO3)2 + 2KI --' PbI2 + 2KNO3
The ionic equation for this reaction isPersonaan ion untuk tindak balas ini adalah
47 A compound FeXs is formed from the reaction between 0.1 mol of iron and10.65 g of element X.What is the relative atomic mass of element X?[Relative atomic mass : Fe:56]Suau sebaticm FeX3 terbentuk dori tindakbalas antara 0.1mol besi dengan 1A.65 gunsur XApakahjisim atom relatf bagi unsurX?frJisim atom relatif : Fe = 56J
48 Table 3 shows the total volume of gas collected at regular intervals in a reaction.Jadud 3 menuniukkan jumlah isipadu gas yang dikumpul pada sela masayang sekatadalam suatu tindak balas.
Time/ sMasa/ s
0 30 60 90 t2a r50 180 zta
Total volume ofgaV cm'Jamlah isipadu gas/ cm3
0 2.A 3.7 <) 6.4 7.3 8.6 8.5
Table 3
What is the average rate of reaction in the second minute?Berapakah kadar tindak balas purata dalmn minit kedudl
A 0.040 cm3s-'
B 0.045 cm's-t
C 0.053 cm3s-r
D 0.O62cm's-r
49 A glass of wine becomes acidic if it is left in the air in certain time.Which of the following equation reprcsents these changes?Segelas wain bertukar menjadi berasid apabila ditinggalkan untilk beherapa kettkaAntra persamaan berikat yang manakah mewabli perubalun infl
50 Diagram 15 shows the apparatus set-up to investigate a redox reaction.Rajah 15 menunjukkot su;uwu radas untukmengkaji satu tindakbalas redoks.
gradute elactrodeelck*td karbon
X soLd:nIarlatart]{
24 434ut
Dilute su$hric acid
Asrd su{ur* catr
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Diagram 15
The colourless potassium iodide solution becomes a brownWhich of the following is X solution?Larutan kalium idida tanpa wama menjadi loutan perang.Antara berikut, yangmanakah larutanX?
JANGAN BUI(A KERTAS SOATAN INI SEHINGGA DIBERITAHU
1.
2.
Kertas soalan ini adalah dalam dwibahasa.
Soalan dalam Eahasa lnggeris mendahuluisoalan yang sepadan dalam Bahasa
Melayu.
Calon dibenarkan menjawab keseluruhanatau sebahagian soalan sama ada dalamBahasa lnggeris atau Bahasa Melayu.
Calon dikehendaki membaca maklumat dihalaman belakang kertas soalan ini.
Untuk Kegunaan Pemeriksa
Bahagian SoalanMarkahPenuh
MarkahDioeroleh
A
1 10
2 10
3 10
4 10
5 10
6 10
B7 20
8 20
c9 20
10 20
Jumlah
4.
Asiln
Kertas soalan inimengandungi 27 halaman bercetak
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INFORJ}'ATION FOR CA}I DI DATESMAKLUMAT UNTUKCALON
l. This question paper consists of three sections: Sections A, B and C.Kertas soalan tni mengandmgi tiga bahagian: Bohaglan A,B dan C.
2. Answer all guestions in Section ,A,. Write your answers for Section A in the spacesprovided in the question paper.
Jaw ab semua soalan dalam Bahagian A. Tul iskan j aw apan 6agz Sahegi an A da lamrucng yang disediakan dalam kertas soalan
3. Answer one question from Section B and one question *om Section C.Write your answers for Section B and Section C on the 'writing paper' providd by theinvigilaton.Answer questions in Section B and Section C in detail.You may use equations, diagrams, tables, graphs and other suitable methods to explainyour answer.Jswab sttu soalan daripada Bahagian B dan satu soslan dcripda Bahagian C.Tuliskan juwapan bagi Bahagian B dan Br.hagitn C pada haloman bergaris dibahagian akhir kertas soalan ini. Jawob Bahagian BdanBlthrgianC dengonterperinci. Anda boleh menggunakan perserrnean, gambar rqiah, jadual, grof dan caralain yang sesuni untuk menjelasktn jawapan anda
4- Show your working. It may help you to get marks.Tunjull<an kerja mengira.Ini membantu anda mendapatkan markah.
5. If you wish to change your answer, neatly cross out the answer that you have done. T?renwrite down the newanswer.Sekiranya anda hendak membatalkon sesuatu jswapan, buat garisan di atas jawapan itu.
6. The diagrams in the questions ar€ not drawn to scale unless stated.Rajah yang mengiringi soalcn tidak diluhisksn mengikut skala kecaali dinyatakan
7. Marks allocated for each question or part question are shown in hackets.Markah yang dipenmakkan bagi setiap soalan atau cetaian saalan ditunjui*an dalamkurungan
B. The time suggested to answer Section A is 90 minutesn Section B is 30 minutes andSection C is 30 minutes.Masa yang dicadangkan untuk menjawcb Bahagian L ialah 90 minit, Bahagien B ialah3O minit &tn Bahagian C ialah 30 minir
9. You may use a non-programmable scientific calculalorAnda dibenarkan mengunakan kalkulator saintifkyang tidak baleh diprogramkan.
10. Hand in your answer sheets a the end of the examination.Serahkan semuo kertas jawapan anda di akhir peperikaan
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Section A16A marksl
Answer all'questions in tlris sectionJowob sernufr soalan dalam hahagian ini.
Figure I show the electron arrangetnent of three atoms of elernents P, Q and RRajah I menunjuk*an susunan eleloron bagi tiga atom unsw P,Qdan R
Figure I
(a) Write the electron &rangement for the atoms of element R.Tuliskan susunctn elektron bagi atom unsur R.
{l markl
(b) Identify the position of element QKenol pasti kedudukan unsur Q.
{l mark}
(c) (i) Which element is chemically inert?Unsur yang manakah lengai dari segi kimia?
ll markl
(ii) Give one reason for the answer in c (i)Beri satu sebab bagi jawapan di c (i)
ll narkl
(d) Element Q dissolves in waterto form an acid and a strCIng bleaching agent.Write the chemical formulae of the bleaching agent.(Insur Q larut dalam air untuk membentuk satu asid dan satu agen pelwnr yang huu.Tuliskan formula kinia bagi ogen pelunhr ltu.
U markj
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(e) Another element S has a proton number of 9.V/hich element shows similar chemical properties to element S?Uwur Inin, S mempunyai nombor proton9.Unsw yang manakah menunjuldran sifat kimia yang scna dengan unsur S7
$ mark\
(g (i) Which element. react vigorously with water?Urcur yong manoftah benindak balas dengan cergcw dengan air?
$ nar*l
(ii) Based on the answer in (i) ,write the chemical equation for the reaction"Berdasarlcon jawapan di fii) ,tulislnn perscrrflaan Hmia bagi tindak balas itu.
[2mwksl
(g) Arrange the atomic size ofelements P, Q and R starting from the smallest.Sustmkon saiz atom unsur P,Q den R bermula daripada yang paling kecil-
ll narkl
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t Diagram 2 shows an experiment !o dctermine the empirical formula of copper (It) oxide.Rajah 2 menunjulr.kan satu ekperimen antuk menmtr*anfornula empirik kuprum(ll\ obida.
Combustion tubeTabung pembakaran
Coppe(Il) oxideKupnn(II) oksida
'Hydrogen flameNyalaan hidrogen
Dry hydrogen gas \Gas hidrogen kering-
HeatPonaskon
Diagram 2
(a) What is meant by empirical formula?Apakah yang dimoksttdlcan dengot formula empiri k 2
fi nnrkl
(b) Before copper(Il) oxide powder is heate{ dry hydnrgen gas is flowed through thecombustion tub for a while. Why?Sebelum serbuk hpram(ll) okida dipouskan, gas hidrogen kering dialirlcan melalut tiubpembakoran seloma beboapa ketiha. Mengapa?
ll markl
(c) State the observation that happens to copper(Il) oxide after heating.Nyatukan pemerhaticn lang berlahu kepada kuprun(Il) akida selepas pemanosun.
fi nmkl
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(d) Table 2 shows the result obtained in tfte experiment:Jadaat 2 menunjrkkan keputusan yang diperolehi dalam eksperimen di atos :
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Mass of combustion tube + asbestos paperJisim tiub pembakaran * kertas asbestos
58.36 g
Mass of combustion tube + asbestcs paper + coppe(ll) oxideJisim tiab nembalcaren + kertas asbestos+ fuprw(ll\ olsida
91.95 g
Mass of cornbustion tub€ + asbestos paper + copperJisim tiub oembakaran + kertas asbestos* kuprwn
85.2a g
Table 2
(i) Based on Table 2,Berdosarkan Jadual 2,
Calculate the mass of copp€r and the mass of oxygen that have reacted.Hitungkan jisim kuprum dan jisim oksigen yang telah bertindak balas.
Mass of copper :
Jisim kuprum:
Mass of oxygen :
Jisim oksigen:Ll markl
(ii) Calculate the ratio of moles of copp€r atoms to oxygsn atoms.Hitungktn nisbah mol bagi atom kuprum kepada atom oksigen.
I Relative atomic mass /Jisim atam relatd:0 = 16 ; Cu:64 ]
12 marks]
(iii) Determine the empirical formula of copper (II) oxide.Tentuksnformula empirift kuprum (Il) oksida-
fl narkl
(iv) Write the chemical equation for the reaction in the experiment.Tulis persamaan bimia bagi tindakbalas dalau eksperimen tersebut'
[2 narksl
(v) This method is not suitable to determine the empirical formula of magnesium oxide.whv?Kaedoh ini tidak sesusi untwk menentukanformula empirik bagi magnesium olcsida.
Kenapa?
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Reaction RTinda*balasR
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Ammonium sulPhateAmmonium sulf*
(NH4hSO4
p and e are industrial processes to manufrcture sulphuric acid and ammonia respectively'
Sufptrgic acid and ammonia are usd to manufacture ammonium sulphate as shown in
Diagram 3.1p ian Q adalah proses-proses indttspi untuk menghasilkan asid salfwik don anmonia maslng'
{b) State one raw material needed for procsss Q?Nyvtakon satu bahan mennh yang dtperlukan mtuk proses Q?
U nork]
(c) (i) Write a balanced chemical equation for reaction R
Tulis persamaan Hmia yang seimbang bagi tindak balas R
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State one use of ammonium sulphateNyatakan satu kegunaan ammonium sulfat
ll mark\(iii) Calculate the percentage of nitrogen by mass in ammonium sulphate
Hi tung pe ratus nitrogen mengikut j is im bagi amnonium sulfat.
I Relative atomic mass / Jisim stom relatif: N : 14 ; O : 16; S = 32; H = I J
f 2 nartcl
Diagram 3.2 shows the structuralformula of the polymer polyvinyl chlorideRajah 32 menunjuk*anformula struktur bagi polimer polivinil Horida
HCI
C
I
H
Diagram 3.2
Draw the structural formula for its monornerLuVsformula struhur bagi monomer polimer tersebut
I I nark]The use of synthetic polyrners extensively in our daily life has become an issueof environmental pol lution.Penggunaan poliwer sintetik secara berlebihan didalom kehidupan seharian telahmenjadi isu kepada pencemaran alam sekitar.
Give one method to overcome this problem.Berikan salu kaedah untuk mengatasi masalah ini
I lmark 1
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(d)
I
H
{e)
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Diagram 4.I and 4.2 shows a set up apparatus to investigate the role of water for acid toshow its acidic properties.Rojah 4.1 ond 4.2 menunjukkan radas wuk menglaji peranan air untuk asid menuniukJan sdatkeasidannya.
Dry hydrogen chloride gas
Gas hidrogen Horida kcrW
MethylbenzeneMetilbewena
Diagram 4.1
Dry hydrogen chloride gas
Gas hidrogen Horida kcring
WaterAir
Diagram 4.2
(a) Write the chemical formula of hydrogen chloride .
Tulisformula kimia hagi hidrogen Horida
ll markl
(b) (i) Dry hydrogen chloride gas is bubbled in methylbernene for 5 minutes as
shown in Diagram 4.1, then tssted with a piece of blue litrnus pap€r.
State the observation.Gas hidrogen Horida kertng dialirkan masuk dalam metilbewena selama 5 minitseperti yang ditunjuW@n dalam Rnjah 4.1, kemudian diuji dengan sekeping kertasIitmus b iru. Nyatakan pemerhatian.
ll norkl
(ii) Explain your answer in b(i)Jelaskan jawapan anda dalamVi)
{2 marksl
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(c) Diagram 4.2 shows dry hydrrrgen chloride gas bubbled into water for 5 minutes.The solution is then divided into two parts, Part I and Parf II.Table 4 shows the observations of the two tests conducted on the two parts.Rajah 4.2 menunjukkan gas hidrogen Horida kering dialirtan masuk dalam air selama 5minit . Larutan itu dibahagikan lepada dua bahagian, Bahogianl dan Bahoglaull.Jadual 4 mentnjulckan pemerhatian bagi dua ujian yang dijalankan ke atas duobahagian ita.
PartBahagian
TestUjian
ObseivationPemcrhorian
I Add magnesium carbonate.Testgas given off with lime waterTambahkon m agn e s i*n karbonat.Uji gas yang terbebas dengon air kapw
EffervescencePembuakanLime water turns chalkyAir kapur menjadi luruh
II Add magnesium ribbon.Test gas given offby pufting inlighted wooden spl interTambahkan pit a ma gn es i wn.Uji gas terhasil dengan memasukkanIrayuuji menyala
Table 4(i) State the role of water that caused the produced gas turns lime water chalky.
Nyatakan peranan air yang menyebabkan penghasilan gas yang menukarkan airkapur menjadi keruh.
$ mar*l
(ii) Write an ionic equation to the repr€s€nt the production of gas in Part ITulis persamaan ion unuk mewakili penghasilan gas dalam Bahagian I
12 nnks]
(iii) Complete the observations in Table 4.Lengkapkan pemerhatian dalom Jadual 4
[2 marksl
(iv) What is the conclusion drawn from the observation in both part?Apakah kesimpulan yong boleh dibuat daripada pemerhatian dalom keduoduobahagian.2
t0
ll markl
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5 Diagram 5 shows the flow chart for dte reaction of propan-l-ol.Rajah 5 menunjukkan carta alir bagi tindak balas propan-l- ol .
Compound XSebatian X
Reaction ITindak balorl
alumina
HeatedPanaskan
HHHtll
H-C-C-C-OHtrlHHII
Propan-l-ol
Reaction IITindalc balasll
AcidifiedKMnOe
-------------*KMnOtberasid
Reaction III l+ CH3COOHfindakbala-sfit
f + HzSOa
Compound ZSebatian Z
Diagrarn 5
(a) State the molecular formula of propan-l-ol.Nyatakanforrmrla molehi bagi propan-l- ol.
U ma*l
(b) The following equation shows complete combustion of propan-l-ol.Persamaan berilat memrnjuklmn pembakarorc lengkap propan-l -ol.
C3H7OH + 9O2 -*+ 3COz + 4H2O2
Calculate the volurne ofcarbon dioxide gas produced if 0.1 mol of propan-l-ol is bumtcompletely in air.Ilinmgkan isipadu gas karbon dioksida yang terhasil jika A.l mol propan-l-al dibakar denganIengkap dalam udara.
[Molar volume :24 dm3 mol-l at room condition]
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Compound YSebatianY
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(c) Compound X is an unsaturatcd hydrocarbon.SebatianX adalah hidrokarbon tery.
(i) What is the meaning of hydrocarbon?Apakah yang dimaksudkm dengan hidrokarbon?
SULIT
ll nmkJ
(ii) Complete the following diagram to collect compound X in reaction I.Lengkapkan rajah berihtt unluk mengutip sebatian X dalam ttudak balas l.
Alumina
12 marksJ(d) hopan-lol is addsd with acidified potassium marganate (VIt) solution and heated in
reaction II.Propn-l- oI ditambahhan dengan larutan kaliun mangout (Yl7) berasid dan dipanaskan dalantindak balas lL
(i) What is the name of reaction II?Apakah nans tindak bolas ll?
$ marklName compound Y.Namakan sebatian Y.
twarrn
(ii)
hopan-l-ol soakedwith glass wool
l1 markl
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(e) Compound Zhas the following properties:
. SebatUn Z mempnyai stfat-stfat beri*at :
STJLIT
o Float on waterTerapwg otas oir
r Fruity smellYangi bwh-buahan
(i) Draw the sfuctural formula of oompound Z.L*is formula smrkur bagi sebatian Z.
$ mnkl(ii) Concer*rated sulphuric acid is added in reaction lll.
6 (a) Table 6 shows the result ofan experimcnt to study the cffet oftemperafure on the rate ofrection between 50 cm3 1.0 mol dm-3hydrochloric acid solution, HCI and 50 cm3
0.2 mol dm-3 sodium thiozulphate soluticiq NazSzOr.Jdual 6 memmjuk*an kepr.hrsan bagi satu elrspeimen unn* menglraji kesan guhu kcatas kadartindakbalas *i*o 50 cm3 1.0 mol dmo t*uton asid sulfarih HzSOr dan 5A enf 0.2 mol &n'3lorutan natlium tiosulfat, NazSzQ.
TemperaturefCSuhufC
30 35 40 45 50
Timc taken for'X' mark to disappear fronr sightMasa tanda X' hilansdari pandoutt 94.8 49.9 36.1 25.2 19.8
Table 6
(a) Balanced the ctremical equmion below for the reaction that occurs in this erperimenL&imbangk*t percomaail kimia dibov,ah bagi tindakbalas yang berlaht dqlan ekprimen ini.
mHCl+Na2S2O3t nNaCl+HzO + Soz+ S
m=
TI:
{2 narksl
(b) Draw the set-up of apparatus used to measure the time taken for 'X' mark to disappearfrom sight.Lakis*an susunan radas yng digwakan untuk mengalatr maso tanda'X' hilang dti
Q marksl
(c) Name the substance that is responsible for'X' mark to disappear from sight.Nama*mt bahan yvng menyebablcan tanda X' hilang dari pandangan-
fi markl
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(d) 'Flot a graph of temperature against time taken for'X' mark to disappear from sight.I^akarkan graf suhu melasan masa tando'X' hilotg doi padmgan
14 mc:ksl
(e) Based on the graph in (d), sbte the relationship between temperature and time.Berdasarkon graf pada (d), nyatakm hubwgan qntara $rtu dan masa.
lt mrkl
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Section B[20 rzr:ksl
Answer any one question.Javtab m(rnt -rnsna sala soolan.
S{'LIT
1 Table 7 shows the proton numberofatom P, Q, Rand S.
The letters used do not represent the actual symbols of the atoms.Jadual T mmwJulikan nombor proton untuk atom P, Q, R dcr S.
Hun{yng diganakan tidak mewakili simbol sebens atom berkenaan.
Atom
AtomP a R s
Proton Number
Nombor protont7 12 8 6
Table 7
{a) , Write the electron arrangement for the atom of element QDetermine the group for element QTalis susunan elekron bagi atom rrrrrQ.Tentufun funpulan untuk msw Q.
pnarksl
O) (i) Basd on Table 7, sel*t two differpnt elemen8 that can form ionic compound.Berdasarkan Jaduol T, pilih dua unsur Malnan yang akan membentuk sebation ion.
ll nokl
(ii) Draw a diagram to show the compound tlrat will be formed in 7(b) (i)Lulris rajah untuk menunjul*an sebatiot yang terbentulc di 7(b) (i)
12markl
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(c) Diagrarn 7 shows the molecule of carbon dioxide. The bond formed between carbon atomand oxygen atom are double covalent bond.Rajah 7 menunjuk*an molekul karbon dlokida. Ikatanyang terbentuk antara atomIurbon dan atom olsigen ialah ilcatan kovalen ganda dua.
18
Dagram 7
Explain the formation of this compouod in terms of :
o Electron arrangementr Electrons involvedo Particles involvod
[Proton number :C:6, O: 8 J
Terangkan tentang pembmwkan sebatian ini dari segi:. Susunan elehront Elektron yang terlibato Zaroh-zorahyangterlibat.
15 narksl
(d) Compare the physical propcrties benpeen ionic compound and covalent compound.Your answer should consist of the following :
o Physical properties in roorn conditionso Melting point and boiling pointo Electricalconductivityr Solubility in water and organic solvento Example ofcompound
Bandingkan sifat*ifutfizikal di utoa sebatian ion don sebatian kovalen.Dalamjawopan ando, perlu mengan&ngi perkara bertlatt :
o Keadaon jirim pada kzadaan bilik"t Taknt lebw dan takst didiht Kekonduksiot elekriko Keterlanttan dalan air dan sebatian organico Contoh sebatian
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Carbon electrode XElel*rod karbonX
19
concentrated coppe(I I)chloride solutionI arut an hprum{ll). kl or i da
Wlcat
Carbon elrctrode YEtefuod korbonY
SI,'LIT
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Diagram 8.1 shows the apparatus set-up for the electrolysis of concentrated copper (II) chloride
solution, 0.1 mol dm-' using carbon electrodes.
Rajah 8.1 menunjulkan susur'rcm radcn untuk me4jalankan elekrolisis larutan larprum(ll) Hiridape kat, 0. l mol dm'
t me ngunokan ele ldrod-e lektrod knrbon.
(a)
(b)
Diagram 8.1
Based on Diagram 8.1, sbte the factors that determine the products formed at
electrode X and elwtode Y.
Berdasarkan Rajah 8.1, nyatakanfakor-fahor yang menentufran hasil yang terbennk pada
elebrodXdan elekrodY..12, morksl
Explain the reactions at electrodes, X and Y. Include the following in yourexplanation:
Terangkan tindak batas pada elektod,X dan Y. Penerangan anda perla m
r List the ions atttracted to each of elecfode, X and Y
Senaraikan ion-ion yang tertarik ke setiap elekrad, X dan Y
r Name of the ions selectively discharged at each elechode
Nams ian'ian yang dipilih wuk dinyahcas di setiap elekrdr The reason why the ions are selectively discharged
Sebab ion-ion ini dipilih unuk dinyahcas
. Half equations for each reaction
Setengah persomaan bagi setiap tindak balas
o The observable changes ofthe solutionPerubahan yang diperhatikon pada lanttan
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(c) Table I shows the incomplete results of a series ofexperiments carried out to' c,onsmrct the electrochemical series of metals.W, X and Y are not the actual symbols of the metals.
Jadwl I mmunjal4ran keputusan yang tidak lenglrap bagi satu siri eksperlmen yang telahdijalanlwn antukmembina sin elebrokimia bagi logun.W, XdanY bulcan simbol sebenar logam-Iogam itu.
Pairs of metalsPasangan lagan
Positive terminalTerminal positif
Potential difference/ VBeza keupayaan
W' Copper Copper 3.1
X,Y Y 0.3
wx X t.8
X, Copper
Table 8
(i) Based on the values ofthe potential differences, arrange the metals in descendingorder in the elecbochemical series.
Berdasarkan niloi beza keupcyaan, susun logam-logan tersebut dalam tertibmenuntn dalam siri elekrokimia.
lt ndf,
(iD Predict the positive terminal and the value of potential difflerence for the pair ofmetals X and Cu.Explain your answer.
Ramulkan terminal positif dan nilai heza bagf pasangan logom X dan C*Jeloskan jawapan anda.
t3 markd
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Cu
Copper${) nitrateKaprum(ll) nitrut
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(d) Diagram 8.2 shows a voltaic cell. Metal Q is situated below copper in the
e leitroch em i stry series.Rajah 8.7 menunjakkan saaru sel voltan. Lagam Q terletak di hawah kuprum dalam siri
elelctrokimia.
Metal QLogam Q
Solution RLarutqnR
Diagram 8.2
State the positive terminal and the negative lerminal ofthis cell-
Suggest a metal that is suitable * m"tal Q and a solution that is suitable as solution
R.
Nyatalan terminal posilif dan tenninal negatif bagi sel ini'
iaaanske, togam yani sesaai sebagai ligam Q dan larutan yang sesuai sebagai larutan k
14 narksl
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Section C[2A marks]
Answer any one qrsstion.Jawab masra-mana satu soalan,
9 Table 9 shows the heat of displacement of hvo diffe,rent metals P and Q withcopper (II) sulphate solution.Jadual 9 menrmju?Jran luba penysarm bagi dua logam yong berlainan, P danQdengan larut ot kuprunt{ll) s u lfat.
(a) Based on the information in Table 9,(i) State one exanple which could be metal P and one ex{rmple which could be metai Q.
Berdasarksn maftlunat dalam Ja&*al 9,
Nyatalam ssta c{}ntoh ymg mwgkin bagi logrnnP dffi sdu contoh yang mungkin bagilogamQ.
[2 marksl
(ii) Explain why there is a difference in the values of the heat of displacement.Jelaskon mengapa terdaryt perbezool nilai lwba penyesran itu.
[4 marksl
O) Calculate the change in temperature of the rnixture in experiment I.
{Specific heat capacity of solution: 4.2 Jg't og't ,
I:litang perubahsn sahu hagi campurcm dalam ehryterimen l- [4 markl
II 50 cm'0.2 moldm-' copper{U)sulphate solution+ metal Q50 cm3 0.2 rnoldrn-t larutst kuprun (ll) sulfut +logam Q
-217
Table 9
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{c) By using one of the metal in 9 (a) (D, describe one experiment to dstermine
the heat of displaceinent.
Your answer should consist of the following :
o Procedure of the experiment
o The method to calculate the heat of displacement
Dengan menggunakan satu daripda logam dalam I (aXi), huraikan saw eksperimen tmtuk
menentukan hcba perqrcsaran.
Jawapan anda perlu mengandungi perkara berikut :c Prosedur elsperim*t
o Kaedah untuk menghittmg haba penyesaron.
[10 markrl
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10 (a)
SI]LTT
Diagram l0 shows an apparatus set-up, its observation and chemical equation toinvestigate the displacement of halogen from its halide solution by halogen P.Rajah ft menunjukkan susunan radas , pemerhatian dan prsamaan kimia'untuk mengkaiipenyesaran hologen daripada larutsn halidanya oleh halogenP .
Diagnm 10
(i) Suggest the identity of halogen PC adangkan idmtiti halogen P
U markl
(i0 Write half equation for the oxidation or r€duction prccess that has occuned.Tuliskon setengah persamaan unuk proses pengofuidaan atet penuntnan yng telahberlalru.
[2, narlal
{iii) Describe a chemical test to verifu the displaced halogen in the reaction.Huraikon sata ujian kimia unt* mengesahkan halogen y(mg tersesar dalom tindakbalas ini.
13 marksT
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potassium A , P
iodide solution U ,/larutan \ ,{, shakekaliumiodida \ I I gonccrrg\H-
_wl, l, I -trichloroethanel,l,l-triHoroetana
Chemical equation:Persamaan kimio :
zlf.l + Pz -'+ 2KP + Ie
t_Jlr{\#- purple
ungu
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(b) Table l0.l shows the result of two experiments to study the effect of metals M and Non the rusting of iron when coiled on iron nail.Jodual l0 .l fienunjukkan keputusan dua eksperimen untuk mengkaji kesan logam M dan Nke atas pengaratan besi apabila dililitkan pada paku besi.
ExperimentEksnerimen
0bservationPemerhatian
Experiment IEloperimenl
Hot agar solution +potassium hexacyanoferrate (l l$solution + phenolphthaleinlarutan agar-cgar panas *kalium heksasianoferat {lllt. +fenolftalein
metal MlogamM
Blue spots formed in theagarTompok biru terbentukdolam agar-sgar
Experiment IIEksperimen ll
Hot agar solution +potassium hexacyanofurrate (l II)solution + phenolphthaleinlarutan agar-agar panas +kaliam helasasianoferat (lfl) +
fenalftaleinmetal NlopamN
Pink spots formed in theagarTompak merch jambuterbentuk dalam agar-agar
Table l0.l
(i) Explain why there is a difference in observations for Experiment I and II.Terangkan mengopa terdapal perbezaan dalam pemerhalian bagi Eksperimenl dan Il.
15 rnarksl
(ii) Arrange in ascending order of metals M, N and iron based on theelectropositivity of the metals.Susunkan secara menaik bagi togam M,N dan besi berdosarkan sifatke e I e laropo si tifan I o gam .
I markl
(c) A student carried out an experiment to construct a Reactivity Series based on thereactivity of metal with oxygen.Table 10.2 shows the observation obtained by the student.Seorang pelajar telah menjalankan satu eh;perimen unluk membina sant Siri Kereaktifanberdasarlcan kzreakdan logam dengan gas oksigen.Jadual 10.? menunjr*kan pemerhatian yang diperolehi oleh pelajar in.
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Table 10.2
(i) Write a balanced chemical equation when iron reacts with oxygen to formiron (III) oxide.Tuliskan persamaan kimia yang seimbang apabila besi bertfndsk balas denganolrsigen untuk membentuk ferum(lll) aksido .
12 marks)
(ii) Table l0.J shows the appararus and materials to investigate the reactiviry ofmetals with oxygen.Jadual 10.3 menunjukkan radas dan bahon untuk mengkaji kereaktifan logam denganoksigen.
Based on Table 10.3, draw a labelled diagram to investigate the rcactiviqv ofany given metal with oxygen in the school laboratory.Berdassrkan Ja&al 10.3, tukiskan sebuah rajah berlabel untuk menkaji kereaktifanmana-tnana logam yang cliberi dengan oksigen di dslam malonal selcolah
[2 marks]
(iii) Arrange in ascending order of metals ircn, T and U based on their reactivitytowards oxygen.Explain how you construct this Reactivity Series.Susunkan secora menoik logam besi ,T danU herdasarkcn kereaktifan logamterse but terhadap oksigen.Terangkan bagaimana anda membina Siri Kereahtifan tersebut.
{4 narksl
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MetalLogam
ObscrvaiionPemerhatian
lronBesi
Iron glows brightly and prducing a brown residueBesi membara dengon lerang dan rnenghasilkan baki berwarna perang
T MetalT glows dimly and producing a black residueLopam T membars densan ,nalan and menshasilkon boki berwarna hitam
U Metal U burns brightly and producing a white residueLog.am U terbakor densan terang dan menshasilkan bad berwarna putih
$4tn
END OS'Q{TESTTON PAPER
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PERIODIC TABLE OF THE I,LEMENTS
l\(t.l
,-//Proton number
rn{I f,i*+*SYmbolI X**-Name of element
\Relative atomic mass
t
HeHelium
{3
LiLithftm
1
{Be
Scrytliunt9
5
BBorfi
t1
6
cCarban
l2
1
NNitroger
l4
Io
0lryS.rtt6
Ir
Flucinel9
l0
NeNsr
?0
llNa
Sodium23
ItMg
t{agnerium24
t3
AIAlurni*ir
m71
l4
siSilicrlrt
2t
ItP
PllorphtrItt3t
l6
sSulphur
32
17
CIChlorit*
19
l8
ArArgss
40
l9
KForascium
39
20
CaCalcfuE
40
2l
SeScadium
45
+t
TiTironium
48
23
vVaaadiu
$JI
24
CrChronium
52
25
MnMrnpnx
c5t
26
FeIron56
27
CoCobolt
59
?8
NiNicktl
59
29
CnCopn6
64
30
ZnZirr65
3l
GnCallium
?0
'JGe
Carmanium71
33
AsAr$nic
75
14
SeSchnium
79
35
BrBromine
80
36
KrKrygon
84
37
RbRutridiun
E6
38
Sr$rontium
tt
39
YYtlriufi
89
,lO
ZrZircolium
9t
dl
NbNiSium
9]
42
MoMolybdcn
uo96
43
Tc't*hoeliu
m18
44
RuRutheniu
mt0l
45
R}Rhodium
103
rl6
PdPalladiurn
106
47
AgSihtr
103
4E
cdCadr,rium
il2
!t9
Inlndirm
il5
50
Snlltil9
5t
SbAatiuony
t22
TeTellutlunr
l2t
5l
Ilnlim
121
5{
XeXmon
t3t
JJ
CsCaesiun
r33
56
BaBerium
137
51
LaLaathanu
mr39
al
TIfllaftrium
t79
1t
TaTanlalun
l8t
11
wTung5len
184
15
ReRheniun
186
76
0sOmium
r90
77
Irlridiun
192
?E
PtPlailusr
195
79
AttQold197
EO
HgMdisury
?01
8l
TITtalliut
3(X
82
PbLd207
83
BiBismulh
249
8rl
Pofulonium
2t0
g5
AtAststinc
210
86
RnRador
JJ''
87
FrFnncium
723
t8
Ra
Radium2:16
t9
Ac
&tinitrm221
104
unqUnnil-
quadium251
t0J
unpUnnil-pct{inlr
260
IUO
Unh
Unnil-hcrum161
107
Uns
Umilsc.piun262
108
Uno
Unnilo$ium265
109
Uue
Unnil6nnium7n6
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1
SULIT: Chemistry 2 4541/2 (PP)
Question No Mark Scheme SubMark
TotalMark
1 (a) 2.1 // 2,1 1 1
(b) Group 17, Period 2 1 1
(c) (i) P // Ne // Neon 1 1
(ii) Octet electron arrangement // 8 valence electrons 1 1
(d) HOQ // HOF 1 1
(e) Q // F // Fluorine 1 1
(f) (i) R // Li // Lithium 1 1
(ii) 2R + 2H2O 2ROH + H2
// 2Li + 2H2O 2LiOH + H2
1. Correct reactants and products 2. Balanced equation
11 2
(g) P , Q , R 1 1
Total 10
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2
Question No Mark Scheme SubMark
TotalMark
2 (a) Chemical formula that shows the simplest whole numberratio of atoms of each element in a compound 1 1
(b) To remove all oxygen / air 1 1
(c) Black solid turns brown 1 1
(d) (i) Mass of copper = 26.88 gMass of oxygen = 6.72 g ( unit compulsory ) 1 1
(ii) 1. Number of mole of Cu = 26.88 /64 // 0.42 Number of mole of O = 6.72 /16 // 0.42
2. Ratio Cu : O = 1 : 1
1
1 2
(iii) CuO 1 1
(iv) CuO + H2 → Cu + H2O
1. Correct reactants and products 2. Balanced equation
11 2
(e) Magnesium is more reactive than hydrogen //Hydrogen is less reactive than magnesium //Hydrogen is below magnesiumin the reactivity series 1 1
Total 10
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3
Question No Mark Scheme SubMark
TotalMark
3 (a) (i) Contact process1 1
(ii) Haber process 1 1
(b) Nitrogen // Hydrogen 1 1
(c) (i)2NH3 + H2SO4 (NH4)2SO4
1. Correct reactants and product 2. Balanced equation
11 2
(ii) Fertilizer 1 1
(iii) 1. 28 X 100 % 132
2. 21.21%
1
1 2
(d) H Cl | | C = C | | H H
1 1
(e) Use biodegradable polymer. [ Accept: Any other correct answer ]
1 1
Total 10
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4
Question No Mark Scheme SubMark
TotalMark
4 (a) HCl 1 1
(b) (i) No changes // blue litmus paper remain unchanged 1 1
(ii) Consist of molecule // no hydrogen ion / H+ 1 1
(c) (i) 1. Helps acid to ionizes / dissociate
2. Produce hydrogen ion / H+ // HCl à H+ + Cl- [ award pt 2 if write correct equation]
1
1 2
(ii) 2H+ + CO32- à CO2 + H2O
1. Correct reactants and products 2. Balanced equation
11 2
(iii) 1. Effervescence // bubbles of gas2. `Pop` sound
11 2
(iv) Acid only shows its acidic properties when dissolve in water// H+/ hydrogen ions are responsible for acid to show their properties.
1 1
Total 10
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5
Question No Mark Scheme SubMark
TotalMark
5 (a) C3H8O [ r : C3H7OH ]
1 1
(b) 1. No. of mole of carbon dioxide = 0.1 X 3 // 0.3
2. Volume of carbon dioxide = 0.3 x 24 dm3 // 7.2 dm3 // 7200 cm3
1
1 2
(c) (i) Compound that contain carbon and hydrogen only 1 1
(ii)
water1. Functional diagram2. Label : water
11 2
(d) (i) Oxidation 1 1
(ii) Propanoic acid
[ r : formula ]
1 1
(e) (i) H O H H H | || | | | H – C – C – O – C – C – C – H | | | | H H H H
[ a: CH3COOC3H7 ]
1 1
(ii) To increase rate of reaction // As a catalyst 1 1
Total 10
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6
QuestionNo Mark Scheme Sub
MarkTotalMark
6 (a) m = 2 n = 2
11 2
(b) Eye
mixture
1. Functional diagram2. Label : Eye , X mark, hydrochloric acid and sodium thiosulphate solution // solution // mixture
11 2
(c) Sulphur 1 1
(d) 1. Labelled axis with units : ( temperature /oC, time /s)2. Suitable scale : (cover 50% of graph paper)3. All point are plotted correctly4. Correct shape and smooth curve
1111 4
(e) The higher the temperature, the less the time taken for Xmark to disappear from sight // the temperature is inverselyproportional to time 1 1
Total 10
X
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Question No Mark Scheme SubMark
TotalMark
7 (a) 1. 2.8.2 // 2,8,2
2. Group 2 // 2
1
1 2
(b) (i) P and Q // Q and R // Cl and Mg // Mg and O
[ a: names of elements ]
1 1
(ii) - +2 --
P Q P
1. label nucleus with dot or symbol and correct shells2. octet electron arrangement and correct charges [ a: actual elements]
11 2
(c) 1. Electron arrangement of C : 2.42. O : 2.63. Carbon atom contributes 4 electrons for sharing with two oxygen atom.4. One oxygen atom contributes 2 electrons for sharing.5. both achieve the octet electron arrangement
High Melting/ boiling pt LowConductselectricity inmolten / aqueous
Electricalconductivity
Does not conductelectricity in allstate.
Soluble in water//Insouble inorganic solvent
Solubility in waterand organic solvent
Insoluble in water//Soluble in organicsolvent
Sodium chloride// other ioniccompound
Example ofcompound
Tetrachloromethane// other organiccompound
1+1
1+1
1+ 1
1+1
1+1 10Total 20
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8
Question No Mark Scheme SubMark
TotalMark
8 (a) (i) Electrode Y : the position of ions in electrochemical seriesElectrode X : concentration of ions / solution/electrolyte
11 2
(b)Electrode Y X
Ions that areattracted Cu2+ , H+ Cl- , OH-
Ions that areselectivelydischarged
Copper(II) ion Chloride ion
Reason
Cu2+ is lower thanH+ in theelectrochemicalseries
Concentration ofCl- higher
Halfequations
Cu2+ + 2e Cu 2Cl- Cl2 + 2e
Observablechanges ofthe solution
Blue solution becomes paler
1 + 1
1 + 1
1 + 1
2 + 2
1
10
(c) (i) W, X, Y, Cu 1 1
(ii) 1. Cu2. 1.3 V3. Metal X is more electropositive than metal Cu
111
3
(ii) 1. Positif terminal : Q2. Negative terminal : Cu3. Suitable metal for Q : silver4. Suitable solution for R : silver nitrate solution
[ a: name of substance ]
1111
4
Total 10
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9
Question No Mark Scheme SubMark
TotalMark
9 (a) (i) 1. P : Mg // Magnesium2. Q: Zn // Zinc
11 2
(ii) 1. The value of heat of displacement for Expt I is more than Expt II.2. The distance between P / Cu is bigger/ further3. than Q/Cu 4. in the electrochemical series.
1
11 1 4
(b)1. mol of CuSO4 = 0.2 x 50 // 0.01 10002. Heat = 0.01 x 336000 J // 3.36 kJ // 3360 J
3. Change in temperature = 3360 50 X 4.2
= 16 oC
1
1
1
1 4
(c) 1. Appratus: Polystyrene cup , thermometer, [spatula] measuring cylinder ( suitable volume)2. Procedure: 1. Measure 50cm3 of copper(II) sulphate solution 2. Pour into a polystyrene cup. 3. Measure the initial temperature, T1 4. Add a spatula of P // Q powder 5. Stir 6. Record the highest temperature, T2
3. Calculations: 1. T2 – T1 = T oC 2. Mol of copper(II) sulphate solution = n mol // 0.2 x 50 // 0.01 1000 3. Heat = mc (T) // 50 x c x T J 4. Heat of displacement = - 50 x c x T J mol-1 0.01 [ negative symbol and correct unit compulsory]
1
111111
11
11+ 1
Max 10
Total 20
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(i) P = chlorine // bromineAccept : formula
1
(ii) Oxidation = 2I- → I2 + 2eorReduction = P2 + 2e → 2P-
Note : P is Cl / Br
1.Correct formula of reactant and product2.Balanced equation
11
10 (a)
(iii) 1. Add slowly // Add drop by drop // Add by using dropper2. starch solution to the product in a test tube3. dark blue colouration/solution is formed
r: precipitate
111
6
(i) Exp 11.Presence of iron(II) ion2.Metal M is less electropositive than iron // metal M located lower than iron in Electrochemical Series3.When metal M in contact with iron nail, Iron rustExp 24. No iron (II) ion // presence of hydroxide ion5. Metal N is more electropositive than iron //metal N located above iron in Electrochemical Series6.When metal N in contact with iron nail, iron do not rust
1
11
11
1Max 5
(b)
(ii) M,iron,N 1 1
(c) (i) 4Fe + 3O2 → 2 Fe2O31. formula of reactant and product correct2. Balanced equation
11 2
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11
(ii)
Asbestos paper
heat heat
1. functional diagram,shading,and both heat2. label
11 2
(iii) 1.T,iron,U2.U is more reactive than T and iron so U is located aboveiron and T in the Reactivity Series3.iron is more reactive than T but less reactive than U soiron is located above T and below U in the ReactivitySeries4.T is less reactive than U and iron so T is located below Uand iron in the Reactivity Series.
1
1
1
1 4
20
END OF MARKING SCHEME
Solid potassiummanganate(VII)
Metalpowder
Glass wool
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SULIT
Nama: Tingkatan:
PROGRAM PENINGKATAN PRESTASI AKADEIVTIKSPM
TAHUN 2OI2
CHEMISTRY
Paper 3One hour and thirty minutes
JANGAN BUKA KERTAS SOAL.AN INI SEHINGGA DIBERITAHU
1.
2.
Kertas soalan ini adalah dalam dwibahasa.
Soalan dalam Bahasa lnggeris mendahuluisoalan yang sepadan dalam Bahasa
Melayu.
Calon dibenarkan menjawab keseluruhanatau sebahagian soalan sama ada dalamBahasa lnggeris atau Bahasa Melayu.
Calon dikehendaki rnembaca maklumat dihalaman belakang kertas soalan ini.
Reaction between 25 cm3 of sod.ium hydroxide solution , NaOH 2.0 mol dm-3 and 25 cm3of ethanoic acid, CH3 COOH 2.0 mol dm-iTirutak balas antara 25 cml larutan natrium hidroksida, NaOH 2.0 mol dm'3 deng*t 25 cm lasid et6noik2.0 mol dm-3
f}Ilililil|flW#f, W
\ Polystyrene cups /Cawan polistirena
Inifial temperature of the rnixture : Tr oC
Suhu cwal campuran
Highest temperature of the mixture: Tz uC
Subu te r t inggi c amFar sn
Change in temperature : T3 "CPerubahsn sulnt
(a) Wdte the initial and the highest temperature of the mixhne and change in tem.perafure
for Experimeni I in Diagram 1.1
Tulis suhu crwal dan suhu tertinggi campuran serta perubahan suhu untuk ElxperitnenldalamRajah l.l
13 marks)
(b) Construct a table that can be used to record the data from both experiments.Bina satuja&nl ymg boleh dignakn wrtuk merekod data bagi kedua-daa eksperimen
(a) V/rite the observation for Experiment I. II and III in Table LTul is pemerlnt ian bagi Eksperimen l, ll don lll dalaw Jadaal I .
13 marksl
(b) Based on Experiment I and II, state the operational definition of soluble salt.Berdasskan Eksperimen I dmt fI" nyatakm definisi secaro operasi bagi garam terlarut.
f3 marks]
(c) Classif the following salts into solubl€ salts and insoluble salts.Kelaskon gsram-gmrofi, di bowuh ke@a garom terlarw de, garam tak terlsrut.
The distance between pnirs of different metals in the electrochemical serisr aflectthe.voltnge produced.Jarak di antara pasangan logamyntg berlainon di dolam shi elehtto*imia mcnpengarahivoltan yrng lerhssil
Diagram 3 shows a voltaic cell which consist of two different metals dipped in an electrolyte.Rajah 3 newnjul*an salu sel voltan yang terdiri daripada dua logam yang berlainan di celup dalansatu elektolit.
Copper{Il) sulphate solutionLar u t an kup r wn(ll)s u Ifu t
Diagranr 3Based on Diagram 3, plan one laboratory experiment to investigate the efTect ofthe distance betwo€n two metals in the electrochemical series on the voltage produced.Berdacwksn Rcjah3, rancang sata ekryrimen mobtwl wtak mengkaji kescn jwukdi sntara dua logam dalam siri elektrokimis kE atas voltan yang terhasil.
Your planning should include the follorrying aspects:Perancangan anda lendailah tnengqftdungi aspek-aspe k ber ikut:
Problem statementPernyataan masalah
AII the variablesSemua pemboleh ubah
HypothesisHipotesis
List of materials and apparatusSenaai balmn danradas
1.Experiment I uses a strong acid whereas Experiment II uses a weak acid.The heat of neutralization of a weak acid by a strong alkali is less than theheat of neutralization of a strong acid by a strong alkali .
2 This is because during neutralization of a weak acid such as ethanoic acid, part of the heat is used to dissociate the acid molecules
Question Rubric ScoreAble to list all the steps correctly
Sample answer:1. Clean the strips of magnesium and copper with sandpaper.2. Measure 50 – 100 cm3 of copper(II)sulphate solution and pour
into a beaker.3. Dip the magnesium and copper strips into the copper(II)
sulphate solution.4. Complete the circuit // Connect the strips to the voltmeter.5. Record the voltmeter reading.6. Repeat steps 1 to 5 by replacing pairs of Mg/Cu with Zn/Cu,
2(f) Able to exhibit the tabulation of data that includes the following fourinformation.
1. Heading for the manipulated variables
2.. Heading for responding variable
3. All Manipulated variables
Sample answer:
Pairs of metals Voltmeter reading // Voltage
(V)
Mg / Cu
Al / Cu
Fe / Cu
Zn / Cu
3
Able to exhibit the tabulation of data that includes the following threeinformation.1. Heading for the manipulated variables2.. Heading for responding variable3. One Manipulated variableSample answer:
Able to exhibit the tabulation of data that includes the following twoinformation.1. Heading for the manipulated variables2.. Heading for responding variable