4541/1 SULIT 1 SULIT 4541/1 4541/1 KIMIA Kertas 1 Oktober 2008 1¼ hrs BAHAGIAN PENGURUSAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER SEKTOR OPERASI PENDIDIKAN KEMENTERIAN PELAJARAN MALAYSIA ______________________________________________ PEPERIKSAAN SELARAS DIAGNOSTIK TINGKATAN 4 2008 KIMIA Kertas 1 Satu jam lima belas minit JANGAN BUKA KERTAS SOALAN INI HINGGA DIBERITAHU 1. Kertas soalan ini mengandungi 50 soalan. 2. Jawab semua soalan 3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan 4. Bagi setiap soalan hitamkan satu ruangan sahaja 5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat. Kemudian hitamkan jawapan yang baru. 6. Rajah yang mengiringi soalan tidak dilukiskan mengikut skala. 7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan. Kertas soalan ini mengandungi 20 halaman bercetak MOZ@C SMS MUZAFFAR SYAH , MELAKA
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4541/1 SULIT1
SULIT 4541/14541/1KIMIAKertas 1Oktober20081¼ hrs
BAHAGIAN PENGURUSANSEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER
SEKTOR OPERASI PENDIDIKANKEMENTERIAN PELAJARAN MALAYSIA
______________________________________________
PEPERIKSAAN SELARAS DIAGNOSTIK TINGKATAN 4 2008
KIMIA
Kertas 1
Satu jam lima belas minit
JANGAN BUKA KERTAS SOALAN INI HINGGA DIBERITAHU
1. Kertas soalan ini mengandungi 50 soalan.2. Jawab semua soalan3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan4. Bagi setiap soalan hitamkan satu ruangan sahaja5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat.
Kemudian hitamkan jawapan yang baru.6. Rajah yang mengiringi soalan tidak dilukiskan mengikut skala.7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh
diprogramkan.
Kertas soalan ini mengandungi 20 halaman bercetak
MOZ@C
SMS MUZAFFAR SYAH , MELAKA
4541/1 SULIT2
1 Which of the following substances contain molecules?
A Zinc
B Ethanol
C Sodium chloride
D Magnesium oxide
2 Which of the following is the correct formula for barium hydroxide?
A BaOH
B Ba2OH
C Ba(OH)2
D BaOH2
3 Which of the following set of elements consist of all non metals?
A Chlorine, Nitrogen and Sulphur
B Oxygen, Hydrogen and Lithium
C Phosphorus, Lead and Carbon
D Carbon, Iodine and calcium
4 Which of the following compounds have electrostatic forces between the particles?
A Ammonia
B Naphthalene
C Iodine
D Potassium oxide
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5 Which of the following is the energy change that occurs in the process of electrolysis?
A electrical energy heat energy
B potential energy chemical energy
C electrical energy chemical energy
D chemical energy electrical energy
6 The properties of acids are due to the presence of
A hydrogen ion
B hydroxide ions
C hydrogen atoms
D hydrogen molecules
7 Which of the following statements is correct?
A All carbonate salts are soluble in water
B All chloride salts are soluble in water
C All nitrate salts are soluble in water
D All sulphate salts are soluble in water
8 The National Monument is made of bronze. Which is the main metal in bronze?
A Aluminium
B Iron
C Tin
D Copper
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9 An enclosed cylinder is filled with helium atoms. Which diagram shows the arrangement
of the helium atoms ?
10 The formula of a substance is written as FeSO4. What is the name of the compound
according to the IUPAC system?
A Iron sulphate
B Iron(II) sulphate
C Iron(III) sulphate
D Iron(II) sulphite
11 The element which does not form compound with other elements is likely to have proton
number of
A 4
B 8
C 10
D 16
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12 Which of the following represents the electron arrangement for sodium chloride, NaCl?
[Proton number; Na, 11; Cl, 17]
13 Electrolytes are able to conduct electricity because they
A have low melting point and boiling point
B contain freely moving ions
C contain freely moving electron
D contain freely moving molecules
14 Which of the following statement describes the property of hydrochloric acid?
A It reacts with any metal to give hydrogen
B It liberates ammonia from ammonium salts
C It causes colour of litmus paper to change from red to blue
D It reacts with any bases to produce a salt.
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15 Insoluble salts can be prepared through
A Precipitation Reaction
B Neutralization Reaction
C Crystallization
D Recrystallization
16 Haber Process can be represented by the following equation:
N2 (g) + H2 (g) → 2NH3 (g)
What is the catalyst, temperature and pressure used in this process?
Catalyst Temperature(˚C) Pressure (atm)
A Iron 450 200
B Platinum 900 150
C Platinum 800 10
D Iron 200 1050
17 The atoms 31
15
P and 32
16
S have the same
A number of protons
B number of neutrons
C number of electrons
D nucleon number
18 The ion of a newly discovered metal M has the symbol M3+ . What will be the formula of
its chloride?
A MCl
B M2Cl3
C MCl3
D M3Cl
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19 The property of an element which cannot be predicted from the position of an element in
the Periodic Table of Elements is
A the charge of its ion.
B the formula of its oxide
C the number of isotopes it has.
D the acidic or basic nature of its oxide.
20 Table 1 shows the proton number of elements M and N.
Element Proton number
M 3
N 17
TABLE 1
Which of the following is true of the compound formed between elements M and N?
Compound formula Type of bond
A MN Ionic bond
B MN Covalent bond
C M2N3 Ionic bond
D M3N2 Covalent bond
21 Which of the following voltaic cells produces the highest voltage?
A Iron - copper cell
B Zinc - copper cell
C Aluminium - zinc cell
D Magnesium - copper cell
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22 Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g)
Based on the equation above we can conclude that
[Relative atomic mass: Zn, 65; H,1; O,16; S, 32]
I 1 mol of sulphuric acid will produce 1 mol of zinc sulphate
II 1 mol of zinc will react with 1 mol of sulphuric acid
III 100 cm3 sulphuric acid 1 mol dm-3 will produce 16.1 g zinc sulphate if the zinc
used is in excess.
IV The total volume of hydrogen gas liberated will be determined by the amount of
zinc and sulphuric acid reacted.
A II and IV only
B I, II and III only
C I, III and IV only
D I, II, III and IV
23 Which of the following ions would liberate a gas that turns damp red litmus paper blue
when added with sodium hydroxide solution and then heated?
A H+
B NH4+
C Zn2+
D Fe2+
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24 Table 2 shows the pairs of polymer and monomer.
TABLE 2
Which of the following pairs of polymer and monomer are correct ?
A I and II only
B I, II and III only
C II, III and IV only
D I, II, III and IV
25 Which of the following diagram represents magnesium oxide?
Polymer Monomer
I Carbohydrate Glucose
II Polyvinyl chloride Chloroethene
III Protein Amino acid
IV Natural rubber Neoprene
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26 How many molecules of bromine are there in 0.045 mol of bromine?
[Avogadro Constant ; 6.02 X 1023 ]
A 2.7 X 1022
B 3.3 X 1023
C 7.9 X 1024
D 1.2 X 1025
27 An element X requires two electrons to form a stable negative ion. Which group is X
located in the Periodic Table of Elements?
A 2
B 16
C 17
D 18
28 The electron arrangement of atoms P and Q are 2.8.4 and 2.6 respectively.
Which of the following statement is true about the formation of a compound between P
and Q ?
A Each atom Q receives an electron from one atom P
B Each atom P receives four electrons from one atom Q
C Each atom P combines with two atoms Q by sharing of electrons
D Each atom P combines with one atom Q by transfer of electrons
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29 Silver nitrate solution of 1 mol dm-3 is electrolysed by using silver electrodes. Which of the
following half equations occur at the anode and cathode respectively?
Anode Cathode
A 4OH- O2 + 2H2O+ 4e 2H+ + 2e H2
B 4OH- O2 + 2H2O+ 4e Ag+ + e Ag
C Ag Ag+ + e Ag+ + e Ag
D Ag Ag+ + e 2H+ + 2e H2
30 Sulphuric acid is a diprotic acid because
A sulphuric acid has the properties of acid and also a dehydrating agent.
B one mole of sulphuric acid can neutralise two moles of bases.
C one molecule of sulphuric acid contains two moles OH- ions.
D one molecule of sulphuric acid produces two H+ ions in water.
31 The following equation represents the reaction between copper(II) oxide and nitric acid.
CuO + 2HNO3 → Cu(NO3)2 + H2O
Calculate the mass of copper(II) nitrate formed when 6.4g of copper (II) oxide powder
reacts with excess nitric acid.
[ Relative atomic mass: Cu,64; N,14; O,16]
A 4.96g
B 5.04g
C 7.52g
D 15.04g
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32 Diagram 1 below shows the atom arrangement in brass that is represented by atom P and
atom Q.
DIAGRAM 1
Which of the following represents metals P an
33 An element represented by the symbol3
7X
A has three valence electrons
B forms a positively charged ion.
C is located in Group 17 of the Periodic Table
D has 3 protons and 7 neutrons.
34 8 atoms of element Z have the same mass as in
Based on the statement above, what is the relative
[Relative atomic mass : Te, 128 ]
A 8
B 16
C 32
D 64
P Q
A Copper Zinc
B Tin Copper
C Zinc Carbon
D Zinc Copper
MOZ@C
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Atom Q
d Q?
.
1 atom of tellurium, Te.
atomic mass of element Z?
Atom P
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35. Which of the following locations are correct of an element with a proton number of 7 in
the Periodic Table of Elements?
I Period 2
II Period 5
III Group 15
IV Group 2
A I and III only
B II and IV only
C I and IV only
D II and III only
36 Diagram 2 shows the electron arrangement in a molecule formed between two Z atoms.
DIAGRAM 2
Which of the following statements is true about molecule Z2?
A Exists as solid at room temperature.
B Conducts electricity in molten state.
C Has a low melting point.
D Dissolves in water.
Z Z
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37 Substance X in the molten form is electrolysed using carbon electrodes. After 10 minutes,
a brown solid is deposited at the cathode and a greenish yellow gas is released at the
anode. What is substance X?
A Lead (II) chloride
B Lead (II) bromide
C Copper (II) bromide
D Copper (II) chloride
38 Which of the following solutions has the lowest pH value?
A 0.1 mol dm-3 sulphuric acid, H2SO4
B 0.1 mol dm-3 ethanoic acid, CH3COOH
C 1.0 mol dm-3 aqueous ammonia, NH4OH
D 1.0 mol dm-3 sodium hydroxide solution, NaOH
39 Zn + 2HCl → ZnCl2 + H2
Based on the equation above, calculate the volume of hydrogen gas released at room
conditions when 1.3 g of zinc powder reacts with excess hydrochloric acid.
47 When sodium hydroxide is added dropwise until in excess to a solution, a white
precipitate which is soluble in excess is formed. The ions that could be present in the
solution are
I Al3+
II Zn2+
III Mg2+
IV Pb2+
A I and II only
B III and IV only
C I, II, and IV only
D I, II, III and IV
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48 Which of the following properties of ceramics are correctly matched to the ceramic
articles?
Ceramic articles Properties of ceramic
I Tiles Resistant to chemical reactions
II Spark plug High melting point
III Superconductor Low electrical resistance
IV Electrical cable holder Good conductor of electricity
A I and II only
B II and III only
C I, II and III only
D II, III and IV only
49 Elements P, Q and R are in the same group in the Periodic Table of Elements. Table 4
shows the observation for the reaction of the elements with chlorine and the formula of the
chloride formed.
Reaction with chlorine Formula of chloride
P Burns brightly PCl
Q Burns very brightly QCl
R Burns most brightly RCl
TABLE 4
Which of the following statements is correct?
A P, Q, R are earth metals
B The atomic radius increases from P to Q to R
C The elements form ion with univalent negative charge
D Their reactivity decreases down the group
MOZ@C
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50 Diagram 4 below shows the set up of the apparatus for the electrolysis of concentrated
sodium chloride solution.
Which of the followi
cathode respectively?
Anode
A O2
B Cl2
C Cl2
D O2
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SULIT20
DIAGRAM 4
ng formulas shows the products formed at the anode and the
Cathode
H2
H2
Na
Cl2
END OF QUESTION PAPER
SMS MUZAFFAR SYAH , MELAKA
Nama: .................................................... Tingkatan: ..............................SULIT4541/2KimiaKertas 2Oktober20082 ½ jam
BAHAGIAN PENGURUSANSEKOLAH BERASRAMA PENUH / KLUSTER
SEKTOR OPERASI PENDIDIKANKEMENTERIAN PELAJARAN MALAYSIA
PEPERIKSAAN SELARAS DIAGNOSTIK TINGKATAN 4 2008
KIMIA
Kertas 2
Dua jam tiga puluh minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Tuliskan nama dan tingkatan padaruang yang disediakan.
2. Jawab semua soalan daripadaBahagian A. Tuliskan jawapan andadalam ruang yang disediakan
3. Jawab satu soalan daripada BahagianB dan satu soalan daripada BahagianC.Jawapan kepada bahagian B danBahagian C hendaklah ditulis padakertas tulis.
4. Anda diminta menjawab dengan lebihterperinci untuk Bahagian B danBahagian C. Jawapan mestilah jelasdan logik. Persamaan, gambar rajah,jadual, graf dan cara lain yang sesuaiuntuk menjelaskan jawapan anda bolehdigunakan.
5. Anda hendaklah menyerahkan kertastulis dan kertas tambahan, jikadigunakan bersama-sama dengankertas soalan.
6. Penggunaan kalkulator saintifik yangtidak boleh diprogramkan adalahdibenarkan.
Bahagian Soalan Markahpenuh
Markahdiperoleh
A
1 102 103 104 105 106 10
B 7 208 20
C9 2010 20
Jumlah
Kertas soalan ini mengandungi 16 halaman bercetak[lihat sebelah
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MOZ@C
SMS MUZAFFAR SYAH , MELAKA
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1. Diagram 1.1 shows the symbols for atoms of elements X, Y and Z.
(a) (i) W
…
(ii) W
…
(iii)
…
(b) Diagliqui
(i) Stat
………
(ii) Na
……
28
Y19
Z
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X
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2
DIAGRAM 1.1
rite the electron arrangement of atom Z.
……………………………………………………………………………………………[1 mark]
hat is the number of neutrons for atom Y?
……………………………………………………………………………………………[1 mark]
What is the atomic mass of atom X?
……………………………………………………………………………………………[1 mark]
ram 1.2 shows the set up of the apparatus of an experiment where a drop of bromined is dropped into a gas jar and is left for a few minutes.
DIAGRAM 1.2
e one observation in the gas jar after a few minutes.
…………………………………………………………………………………………….[1 mark]
me the process that occurred in the gas jar.
……………………………………………………………………………………………..[1mark]
12 14 9
bromine
gas
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(iii) Name the type of particles that exist in bromine.
…………………………………………………………………………………………………..[1 mark]
(iv) State the change of state of bromine that occurred in the gas jar.
…………………………………………………………………………………………………..[1 mark]
(v) The change of state in (b) (iv) can occur at room temperature. Explain why
………………………………………………………………………………………………….[1 mark]
(c) Substance X has a melting point of 79oC . Draw the particles arrangement of substance X at60oC and at 80oC.
At 60oC At 80oC[2 marks]
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2. An experiment was carried out in the school laboratory to determine the empirical formula of anoxide of copper by flowing hydrogen gas over heated copper oxide. Table 2 shows the resultsobtained.
Description Mass (g)
Combustion tube + asbestos paper 36.20
Combustion tube + asbestos paper + copper oxide 39.40
Combustion tube + asbestos paper + copper 38.76
TABLE 2
(a) What is meant by ‘empirical formula’ ?
………………………………………………………………………………………………
………………………………………………………………………………………………[1 mark]
(b) Draw a labelled diagram to show the set up of the apparatus that can be used to carry outthe experiment above.
[2 marks]
(c) State one precautionary step to be taken when carrying out the experiment above.
rite the half equation for the reaction at electrode T.
……………………………………………………………………………………..[1 mark]
tate the colour change (if any) to the copper (II) sulphate solution.
…………………………………………………………………………………..[1 mark]
copper(II) sulphatesolution
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(ii) Explain your answer in (d)(i)
……….……………………………………………………………………………………
………..……………………………………………………………………………………
…………………………………………………………………………………………….[2 marks]
(f) The above experiment is repeated by using carbon electrodes to replace the copperelectrodes.
(i) Name the product formed at electrode U.
……………………………………………………………………………………………..[1 mark]
(ii) Describe how you could verify the product formed in f(i)
…….………………………………………………………………………………………..
…….………………………………………………………………………………………..
…….………………………………………………………………………………………..[2 marks]
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5. Diagram 5 shows the set up of the apparatus and the magnification of the burette reading for thetitration of 25.0 cm3 of potassium hydroxide solution and 1.0 mol dm-3 of hydrochloric acidusing phenolphtalein as indicator.
Initial titration
(a) Complete the tab
Final burrett re
Initial burrette
Volume of acid
(b) State the change
…………………
(c) Write the chemic
…………………
(d) Calculate the con
MOZ@C
0 25
10
Final titration
DIAGRAM 5
le below.
ading/cm3
reading/cm3
/cm3
of colour to the phenolphtalein indicator in
……………………………………………
al equation for the neutralisation reaction.
……………………………………………
centration of the potassium hydroxide solut
1
solution
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Potassiumhydroxide
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[2 marks]
the titration.
…………………………………[1 mark]
…………………………………[1 mark]
ion in mol dm-3.
A
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[3 marks](e) The experiment above is repeated by using 1.0 mol dm-3 of sulphuric acid to replace the
hydrochloric acid to titrate the 25.0 cm3 potasssium hydroxide solution.
(i) State the volume of the sulphuric acid needed to titrate the potassium hydroxide solution.
……………………………………………………………………………………………………[1 mark]
(ii) Explain your answer in (e) (i).
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..[2 marks]
6. Diagram 6 shows the flow chart for the industrial manufacture of sulphuric acid.
+ O2 + O2
Heat Step X
Step Y + H2SO4
DIAGRAM 6
(i) Name the process of manufacturing sulphuric acid.
…………………………………………………………………………………………….[1 mark]
(ii) Write a balanced chemical equation for Step X and Step Y.
Step X: …………………………………………………………………………………………
Step Y: …………………………………………………………………………………………
[2 marks]
Sulphur Sulphur dioxide Sulphur trioxide
OleumSulphuric acid
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(iii) State the three conditions required for the reaction in Step X.
……………………………………………………………………………………………….
……………………………………………………………………………………………….
……………………………………………………………………………………………….[3 marks]
(b) Sulphuric acid reacts with aqueous ammonia to form ammonium sulphate, (NH4)2SO4 salt.
(iii) Calculate the percentage of nitrogen in ammonium sulphate.[Relative atomic mass : H, 1; O, 16; N, 14; S, 32 ]
[2 marks]
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Section B ( 20 marks )Answer any one question from this section.
The suggested time to answer section B is 30 minutes.
7. Diagram 7 shows the formulae of 4 types of gases released during the eruption of a volcano.
N2 CO2 H2S H2O
DIAGRAM 7
(a) Calculate the molar mass of each gas shown in Diagram 7.[Relative atomic mass : H, 1; C, 12; O, 16; N, 14; S, 32 ]
[4 marks]
(b) Show that 0.9 g of water vapour contains the same number of molecules as in 2.2 g ofcarbon dioxide.[Relative atomic mass: H, 1; C, 12; O, 16; Avogadro Constant, NA = 6.02 X 1023]
[4 marks]
(c) A sample contains 0.1 mol carbon dioxide gas at room temperature and pressure.[Relative atomic mass : C, 12; O, 16; 1 mol of gas occupies a volume of 24 dm3 at roomtemperature and pressure; Avogadro Constant,NA = 6.02 X 1023]
Calculate:
(i) the volume,
(ii) the mass,
(iii) the number of molecules and
(iv) the number of atoms
of the 0.1 mol carbon dioxide gas in the sample.[5 marks]
(d) At very high temperature, hydrogen sulphide gas released from the eruption of thevolcano will react with oxygen in the air to produce sulphur dioxide and water vapour.Referring to the information above,
(i) write a balanced chemical equation to represent the reaction.
(ii) calculate the maximum mass of sulphur dioxide produced if 952 g of hydrogensulphide is released from the volcanic eruption.
[7 marks]
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8. Table 8.1 shows the electron arrangement for atoms P, Q dan R.
Element Electron arrangement
P 2.8.1
Q 2.8.7
R 2.4
TABLE 8.1
(a) The reaction between atoms of P and Q form an ionic compound whereas the reaction betweenatoms of Q and R forms a covalent compound. Based on the above statement, explain howthese ionic and covalent compounds are formed.
[12 marks]
(b) Table 8.2 shows the melting point and boiling point of two chemical compounds at roomtemperature.
Compound Melting Point (OC) Boiling Point (OC)
M - 23 76.8
N 2030 2970
TABLE 8.2
Explain the differences in the melting point and boiling point of compound M and N with respectto the types of particles present and the types of bonding.
[ 8 marks]
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Section C ( 20 marks )Answer any one question from this section.
The suggested time to answer section C is 30 minutes.
9. (a) What is the meaning of electrolyte?[2 marks]
(b)
Explain the above statement.[4 marks]
(c) A student has a spoon made of iron. He intends to beautify the spoon by electroplating itwith a suitable metal.Design a laboratory experiment to electroplate the iron spoon.
Your answer should consist of the following:
Chemicals required
Procedures of the experiment
Diagram showing the set-up of the apparatus
Half-equations involved in the reaction
Observation
[10 marks]
(d) Electrolytic cell and voltaic cell are two types of cells.
Draw one example of a voltaic cell and write the half equation for the reaction that occurs atthe anode and cathode.
10. (a) Describe an experiment to prepare a dry zinc nitrate.Your answers should include the equations involved.
[10 marks ]
(b) Diagram 10 shows the arrangement of atoms in pure copper and brass.
DIAGRAM 1
(i) What is the meaning of alloy?
(ii) State the three aims of alloying
(iii) Brass is harder than pure copper. Expla
pure copper
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0
[1 mark]
[3 marks]in.
[6 marks]
brass
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Name :………………………………………………………… Class: ………….………
BAHAGIAN PENGURUSANSEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER
SEKTOR OPERASI PENDIDIKANKEMENTERIAN PELAJARAN MALAYSIA
_______________________________________________
PEPERIKSAAN SELARAS DIAGNOSTIK TINGKATAN 4 2008
KIMIA
KERTAS 3
Satu jam tiga puluh minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Tuliskan nama dan tingkatan anda padaruangan yang disediakan.
2. Kertas soalan ini adalah dalamdwibahasa.
3. Soalan dalam Bahasa Inggerismendahului soalan yang sepadan dalamBahasa Melayu.
4. Calon dikehendaki membaca maklumatdi halaman 2 kertas soalan ini.
S
J
Kertas soalan ini mengandungi 10 halam
4541/3KIMIAKertas 3Oktober20081½ Jam
MOZ@C
SMS MUZAFFAR SYAH , MEL
Untuk Kegunaan Pemeriksa
oalan MarkahPenuh
MarkahDiperoleh
1 15
2 18
3 17
umlah 50
an bercetak
AKA
SULIT
4541/3 SULIT2
INFORMATION FOR CANDIDATESMAKLUMAT UNTUK CALON
1. This question paper consists of three questions. Answer all questions.Kertas soalan ini mengandungi tiga soalan. Jawab semua soalan.
2. Write your answers for Question 1 and Question 2 in the spaces provided in thequestion paper.Tuliskan jawapan bagi Soalan 1 dan Soalan 2 dalam ruang yang disediakandalam kertas soalan.
3. Write your answers for Question 3 on the lined pages at the end of the questionpaper in detail. You may use equations, diagrams, tables, graphs and any othersuitable methods to explain your answer.Tuliskan jawapan bagi Soalan 3 pada halaman bergaris di bahagian akhir kertassoalan ini dengan terperinci. Anda boleh menggunakan persamaan, gambarrajah, jadual, graf dan cara lain yang sesuai untuk menjelaskan jawapan anda.
4. Show your working. It may help you to get marks.Tunjukkan kerja mengira, ini membantu anda mendapatkan markah.
5. If you wish to change your answer, neatly cross out the answer you have done.Then write down the new answer.Sekiranya anda hendak menukar jawapan, batalkan jawapan yang telah dibuat.Kemudian tulis jawapan yang baru.
6. Diagrams in the questions are not drawn to scale unless stated.Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakansebaliknya.
7. Marks allocated for each question or part questions are shown in brackets.Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkandalam kurungan.
8. Time suggested for answering Question 1 and Question 2 is 45 minutes andQuestion 3 is 45 minutes.Masa yang dicadangkan untuk menjawab Soalan 1 dan Soalan 2 ialah 45 minitdan Soalan 3 ialah 45 minit.
9. You may use a non-programmable scientific calculator.Anda dibenarkan menggunakan kalkulator saintifik yang tidak bolehdiprogramkan.
10. Hand in this question paper at the end of the examination.Serahkan semua kertas jawapan anda di akhir peperiksaan.
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Marks awarded:
Mark Description
3 Excellent: The best response
2 Satisfactory : An average answer
1 Weak : An inaccurate response
0 No response or wrong response
Pemberian Markah:
Skor Penerangan
3 Cemerlang: Respons yang paling baik
2 Memuaskan: Respons yang sederhana
1 Lemah: Respons yang kurang tepat
0 Tiada respons atau respons salah
MOZ@C
SMS MUZAFFAR SYAH , MELAKA
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4541/3 4
Answer all questions
1. An experiment was carried out by a group of students to determine the melting pointof acetamide. Diagram 1 shows the thermometer reading at the 4th and the 6th minuteof the experiment when acetamide was heated in a boiling tube until above itsmelting point.
DIAGRAM 1
(a)
TABLE 1
Table 1 shows the results of the experiment. Based ontable to show the temperature at the 4th and the 6th minu
(b) On the graph paper provided, draw the graph of temperaon the collected data.
Time /min0 ½ 1 1 ½ 2
Temperature/o C27.0 36.0 50.0 66.0 82.0
Time /min4 4½ 5 5½ 6
Temperature/o C84.0 88.0 92.0
100
90
80
Thermometer reading atthe 4th minute
100
1(b)
Forexaminer’suse
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SMS MUZAFFAR SYAH , MELAKA
Thermometer reading atthe 6th minute
Diagte.
ture a
8
90
80
ram 1, complete the
2 ½ 3 3 ½
2.0 82.0 82.0
1(a)
SULIT
[3 marks]
gainst time based
[3 marks]
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4541/3 SULIT5
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(c) Use the graph in (b) , to determine the melting point of acetamide. Show on thegraph how you determine this melting point.
………………………………………………………………………………
[3 marks]
(d) The temperature did not change from the 2nd minute until the 4th minute.Explain why.
…………………………………………………………………………………
…………………………………………………………………………………
…………………………………………………………………………………
[3 marks]
(e) Acetamide is an example of a covalent compound and sodium chloride is an example ofan ionic compound. Classify the following compounds into covalent compounds andionic compounds.
2. The reactivity of alkali metals with water depends on their position in Group 1 of thePeriodic Table of the Elements. Diagram 2 below shows the set up of the apparatusfor an experiment to determine the reactivity of the alkali metals with water.
DIAGRAM 2
The experiment is carried out by using lithium, sodium and potassium to react withwater respectively. Observation of the experiment is shown in Table 2.1 below.
ALKALI METAL OBSERVATION
LithiumThe lithium metal moves slowly on the surface of thewater.
SodiumThe sodium metals moves faster on the surface of thewater with “hissing” sound.
PotassiumThe potassium metal moves the fastest on the surfaceof the water.
TABLE 2.1
alkali metal
basin filled withwater
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(a) Complete Table 2.2 below based on the experiment.
Name of variables Action to be taken(i) Manipulated variable
(b) State the hypothesis for the experiment above.
……………………………………………………………………………………..
……………………………………………………………………………………..[3 marks]
(c) Based on Table 2.2, arrange the alkali metals in descending order of reactivityof the metals with water.
………………………………………………………………………………[3 marks]
2(a)
2(b)
2(c)
Forexaminer’suse
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(d) The proton number of the alkali metals increase in the order:
Lithium → Sodium → Potassium
State the relationship between the position of the alkali metals in Group 1and their reactivity.
…………………………………………………………………………..................
……………………………………………………………………………………..
……………………………………………………………………………………..[3 marks]
(e) Rubidium is an alkali metal located below potassium in Group 1 . Predict thereactivity of rubidium with water.
………………………………………………………………………………[3 marks]
2(d)
2(e)
Forexaminer’suse
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3.
Based oelectrochvalues.
Your pla
(i) S
(ii) A
(iii) H
(iv) L
(v) P
(vi) T
MOZ@C
The distance of pairs of metals in the electrochemicalseries influenced the voltage values in different
SULIT10
n the statement above, plan a laboratory experiment to construct anemical cell to determine the factor that influences the differences in the voltage
nning should include the following:
tatement of the problem
ll the variables
ypothesis
ist of materials and apparatus
rocedure
abulation of data
[17 marks]
END OF QUESTION PAPER
electrochemical cells.
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1
SULIT 4541/1/2/34541/1KimiaOktober2008
BAHAGIAN PENGURUSANSEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER
SEKTOR OPERASI PENDIDIKANKEMENTERIAN PELAJARAN MALAYSIA
PEPERIKSAAN SELARAS DIAGNOSTIK TINGKATAN EMPAT 2008 SBP
KIMIAPeraturan pemarkahan Kertas 1, 2 dan 3
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Paper 1
1 B 21 D 41 B2 C 22 D 42 B3 A 23 B 43 C4 D 24 B 44 C5 C 25 C 45 C6 A 26 A 46 B7 C 27 B 47 C8 D 28 C 48 C9 D 29 C 49 B
10 B 30 D 50 B11 C 31 D12 D 32 A13 B 33 B14 D 34 B15 A 35 A16 A 36 C17 B 37 D18 C 38 A19 C 39 D20 A 40 B
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3
Marking Scheme Paper 2Section A
No MARKING CRITERIA MARK
SUB TOTAL1(a)(i)
(ii)(iii)
2.71424
111 3
1(b)(i)(ii)(iii)(iv)(v)
Reddish brown gas formedDiffusionMoleculesLiquid → gasBromine has low boiling point
11111 5
1(c)
1
1 2
10
2(a) A chemical formula that gives the simplest whole number ratioof atoms of each element in the compound.
1 1
2(b)
Burning excess hydrogen
- functional
- label( oxide of copper, dry hydrogen gas and heat)
1
1 2
Dryhydrogengas
Oxide of copper
Heat
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4
2(c) ●Remove all the air from the apparatus before the oxide ofcopper is heated●The flow of hydrogen gas is continued throughout the cooling ofthe product
Any one answer correct 1 1
2 d(i)
2 d(ii)
2d(iii)
mass of copper : 38.76 – 36.20 = 2.56gmass of oxygen : 39.40 – 38.76 = 0.64g
Calculation + mass including unit
Cu : O2.56/64 : 0.64/160.04 : 0.04
1 : 1
CuO
1
1
1 3
2(e) CuO + H2 Cu + H2O 1 1
2(f) No.
Magnesium is more reactive than hydrogen.// Magnesium isabove hydrogen in the Reactivity Series.
1
1 2
10
3(a) WTV
111 3
3 (b) P2+ 1 1
3(c) R 1 1
3(d) ● The atoms have the same valence electron.● alkaline● R is more reactive than Q
111 3
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3(e) V, U, P and T 1 1
3(f) Forms coloured compound/ion//can act as catalyst//has variableoxidation number
1 1
10
4(a) U 1 1
4(b) copper (II) ion, suphate ion,hydrogen ion,hydroxide iona: symbol
1 1
4(c)(i)(ii)
brown solid is deposited//electrode T becomes thickerCu2+ + 2e Cu
11 2
4(d) (i)(ii)
The intensity of blue colour solution remains unchangedThe rate of Cu2+ ion discharged at the cathode same with the rateof Cu2+ ion formed at the anodeThe concentration / no.of Cu2+ ion remains unchanged
1
11 3
4(f)(i)(ii)
oxygen gasPut a glowing wooden splinter near/into the mouth of the test tubelighted up/rekindled
111 3
10
5(a)
Final burrett reading/cm3 25.55Initial burrette reading/cm3 0.55Volume of acid/cm3 25.00
11 2
5(b) pink to colourless 1 1
5(c) HCl + KOH → KCl + H2O 1 1
5(d) MaVa = 1MbVb 1
1.0 x 25.0 = 1Mb x 25.0 1
Mb = 1.0 mol dm-3
1
1
1 3
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5(e) 12.5 cm3
Sulphuric acid is a diprotic acid.has 2 times the concentration of H+ ions compared tohydrocholric acid.
--------------------------- X 10014(2)+1(8)+32+16(4)
= 28----- X 10032
= 21.21%
11
1
1 4
10
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7
Section BNo MARKING CRITERIA MARK
SUB TOTAL7 (a) 1. N2 : 2 X 14 = 28
2. CO2 : 12 + 2(16) = 44
3. H2S : 2(1) + 32 = 34
4. H2O : 2(1) + 16 = 18
1
1
1
1 4
7(b) 1 moles of water vapour = 0.918
= 0.05
2 no. of molecules = 0.05 moles X 6 X 1023
= 3 x 10 22
3 moles of CO2 = 2.244
= 0.05 moles
4 no. of molecules = 0.05 moles X 6 x 1023
= 3 x 10 22
1
1
1
1 4
7(c)(i)
(ii)
(iii)
(iv)
Volume = 0.1 X 24= 2.4 dm3// 2400cm3
Mass = 0.1 X 44= 4.4g
No. of molecules = 0.1 X 6.02 X 1023
= 6.02 X 1022
No. of atom = 3 X 0.1 X 6.02 X 1022
= 1.806 X 1023
1
1
1
11 5
7d(i)
(ii)
2 H2S + 3 O2 → 2SO2 + 2H2OCorrect formula of reactant and productCorrect no. of mol of reactantCorrect no. of mol of product
1. Moles of H2S = 95234
= 28
2. 2 moles of H2S produced 2 moles SO2
28 moles of H2S produced 28 moles of SO2
3. mass of SO2 = 28 x [ 32 + 2(16) ]= 1792 g
111
1
11
1 7
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8
208(a) Between P and Q
Atom P has 1 valence electron
Atom P loses/donates/transfers 1 electrons to form P+ ion
//
PP+ + e- and attain stable octet electron arrangement
Atom Q has 7 valence electrons
Atom gains/receives/accept 1 electron to formQ- ion//
Q + e-Q-
attain the stable /octet electron arrangement
The two oppositely-charged ions// the P+ and Q- ion are
bonded together by a strong electrostatic force
To form a ionic compound with the formula PQ //
Diagramn
Between Y and Z
Atom R has 4 valence electrons and atom Q has 1 valence
electrons
One atom R contributes 4 electrons and (each) atom Q
contributes one electron for sharing
Atom R shared 4 pairs of electron with 4 atoms Q
to attain a octet /stable electron arrangement respectively
Diagram
1
1
1
1
1
1
1
1
1
1
1
1
P
Q
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9
12
8(c) Compound M is an ionic compounds
Compound N is a covalent compounds
Compound M has high melting and boiling point
Compound N has low melting and boiling point
Strong electrostatic force of attraction exists between
the ions /the oppositely-charged ions in compound M
Weak intermolecular forces //held together by weak (Van
der Waals) force of attractions between molecules in
compound N
A lot of heat energy // high of energy is required to break
the strong forces in the compound M
● little heat energy //low energy is needed to overcome the
weak forces in the compound N
1
11
1
1
1
1
18
20
R QQ
Q
Q
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Section CNo MARKING CRITERIA MARK
SUB TOTAL9(a) 1.Electrolyte is an ionic compound that can conduct electricity
2.in the molten state or aqueous solution.11 2
9(b) 1. In powdered form, lead(II) ions and Bromide ions cannot movefreely.2. The ions are held together with strong electrstatic forces3. In molten state, the ions can move freely.4. The free moving ions carry the electrical charges.
1
111 4
9(c) 1. Chemicals required: silver nitrate solution, silver plate,Procedures:2. [50 – 200]cm3 of [0.5 – 2.0] mol dm-3 of silver nitrate solutionis poured into a beaker.3. The silver plate is the anode and the iron spoon is the cathode.4. The silver plate and the iron spoon are connected to the batterywith the connecting wires.5. The silver plate and the iron spoon are then dipped into thesilver nitrate solution.6. [complete and functional set-up of apparatus]7. [labels: at anode: silver plate, at cathode: iron spoon,electrolyte: silver nitrate solution}8. Half equation at anode: Ag → Ag+ + e9. Half equation at cathode: Ag+ + e → Ag10. Observation: iron spoon is covered with grey, silvery/shinydeposit.
1
1
1111
1
111 10
9(d) 1. [one example of voltaic cell with complete and functional set-upof apparatus:2. [Labels: at anode: more electropositive metal,eg. Zinc
at cathode: less electropositve metal, eg. Copper]a suitable electrolyte, eg. Copper(II) sulphate solution]
3. Half-equation at anode: Zn → Zn2+ + 2e4. Half-equation at cathode: Cu2+ + 2e → Cu
1
111
420
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No MARKING CRITERIA MARK
SUB TOTAL10(a) 1 Name of suitable reactant e.g: zinc/zinc oxide/zinc carbonate
and nitric acid
2 [50-200] cm3 of [0.1-2.0 ]moldm-3 of nitric acid is poured into abeaker
3 Heat /Warm the acid
4 Add in zinc/zinc oxide/zinc carbonate into the acid bit by bituntil in excess/ no longer dissolves
5 Stir the mixture and filter
6 The filtrate is poured into an evaporating dish.
7 heat until saturated
8 The solution is allowed to cool
9 The crystals formed are filtered and by compressing/pressingbetween 2 sheets of filter paper.
10 Suitable chemical equations e.g ;
ZnCO3 + 2HNO3 Zn(NO3)2 + H2O + CO2
1
1
1
1
1
1
1
1
1
1 10
10b(i)
(ii)
(iii)
An alloy is a mixture of two or more elements with a certain fixedcomposition in which the major component is a metal
To increase the strength/ hardness of a pure metal Toincrease the resistance to corrosion of a pure metalTo improve the appearance of a pure metal
In pure copper,atoms are of the same sizeatoms are orderly arranged in layersthe layers of atoms can slide over each one another when a force isapplied
In brass, atoms of tin and copper have different sizethe presence of tin atoms disrupt the orderly arrangement of thecopper atoms.The layers of copper atoms are more difficult to slide over eachother.
1
111
111
1
11
1020
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12
Marking Scheme Paper 3
1 (a) KK0503 – Measuring and using numbers
EXPLANATION SCORE[Able to write both temperatures with correct to 1 decimal place]
temperature reading : 82.0 °Ctemperature reading : 97.0 °C
3
[Able to record all the volumes accurately but without decimal place]
temperature reading : 82temperature reading : 97
2
[Able to write at least one reading of the temperature accurately] 1No response given / wrong response 0
1 (b) KK0506 – Communicating
EXPLANATION SCORE[ Able to draw a graph of temperature against time of the experiment onthe same axes with all the 4 items below correctly ]
(i) axes labelled correctly with units(ii) suitable scale used(iii) all points plotted correctly(iv) smooth curve of graph and more than ½ size of graph paper 3
[ Able to draw a graph of temperature against time of the experiment onthe same axes with all the 3 items correctly ]
2
[ Able to manipulate two items correctly ] 1No response or wrong response 0
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1 (c)KK0505 – Predicting
EXPLANATION SCORE[Able to state the temperature correctly and able to show the how the meltingpoint is determined on the graph]Answer: 82 .0
3
[Able to state the temperature but without unit and did not label melting pointon the graph correctly]Answer: 82
2
[Able to state the temperature but without unit and did not show the meltingpoint on the graph]Answer: 82
1
No response given / wrong response 0
1 (d) KK0508 – Interpreting Data
EXPLANATION SCORE[Able to interpret the data accurately]Suggested answer:The heat energy absorbed is used to overcome the forces of attraction/bondsbetween the molecules of acetamide
3
[Able to give correct interpretation but less accurate]Suggested answer:The heat energy is used to overcome the forces of attraction of molecules /particles of acetamide
2
[Able to give an idea]Suggested answer:The heat energy is used / absorbed.
1
No response given / wrong response 0
82oC
meltingpoint
Melting point
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14
1 (e) KK0505 – Classifying
EXPLANATION SCORE[Able to classify the ionic and covalent compounds correctly]
Ionic Covalent
Magnesium chlorideCopper(II) nitrate
Zinc sulphate
MethylbenzeneTetrachloromethane
Carbon dioxide
3
[Able to state at least two pairs correctly // correct grouping but wrongheading or vice versa ]
2
[Able to state one pair correctly in a correct grouping] 1
No response given / wrong response 0
2(a) KK0510 - State the variables
EXPLANATION SCORE[Able to state the three variables and action to be taken correctly]
Name of variables Action to be taken(i) Manipulated variable:
Type of group 1 metalsused
(i) The way to manipulatevariable:
Use lithium, sodium andpotassium metal for eachexperiment.
(ii) Responding variable:
Rate of reaction//Reactivity ofthe reaction
(ii) What to observe inthe responding variable:
The movement of metal onthe water surface.
(iii) Fixed variable:
Quantity/size of metal used.
(iii) The way to maintainthe fixed variable:Use the same quantity/sizeof metal.
6
[Able to state any five items correctly] 5[Able to state any four items correctly] 4[Able to state any three items correctly] 3[Able to state any two items correctly] 2[Able to state any one item correctly] 1No response given / wrong response 0
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15
2 (b) KK0512 – Stating hypothesis
EXPLANATION SCORE[Able to state the relationship between manipulated variable andresponding variable correctly]Suggested answer:The metal which is below in Group 1 is more reactive in the reaction withwater//The lower the metal in Group 1 the more reactive is the reactionwith water.
3
[Able to state the relationship between manipulated variable andresponding variable but in the opposite direction]Suggested answer:The more reactive the reaction, the lower the position of the metal in Group 1
2
[Able to state an idea of the hypothesis]Suggested answer:Metals in Group 1 can react with water
1
No response given / wrong response 0
2(c) KK 0508 – Interpreting Data
EXPLANATION SCORE[Able to arrange the metals in descending order based on their reactivity]Suggested answer:K, Na, Li
3
[Able to arrange the metals in ascending order based on their reactivity]Answer:Li, Na, K,
2
[Able to arrange the position of at least two metals in descending/ascending]Suggested answer:Na, Li, K// Li, K, Na// Na, K, Li
1
No response given / wrong response 0
2(d) KK0507- Making relationship
EXPLANATION SCORE[Able to state the relationship accurately]Suggested answer:The lower the position of the metal in Group 1, the higher the reactivity of themetal.
3
[Able to state the relationship correctly but less accurate]Suggested answer:The reactivity of the metals is inversely proportional to their position in thegroup.
2
[Able to state an idea of a relationship]Suggested answer:Position of metals affect the reactivity
1
No response given / wrong response 0
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16
c2(e) KK 0508 – Predicting
EXPLANATION SCORE[Able to predict the reactivity of rubidium correctly]Suggested answer:The reaction of Rubidium is most reactive among lithium, sodium andpotassium when react with water
3
[Able to predict the arrangement of the metals based on their reactivity]Suggested answer:The reaction of Rubidium is most reactive.
2
[Able to give an ideaSuggested answer:Rubidium is a reactive metal
1
No response given / wrong response 0
3.(a) KK051021 – Statement of the problem
EXPLANATION SCORE[Able to make a correct statement of problem]Suggested answer:Does the distance between two/ pair of metals in the electrochemical seriesgive different voltage values?
3
[Able to make a statement of the problem or suitable aim]Suggested answer:Does the distance between two /pair of metals give different voltage values?//Distance between two/pair of metals in the electrochemical series givesdifferent voltage values.
2
[Able to state an idea of statement of problem or aim]Metals influence the voltage values
1
No response given / wrong response 0
3 (b) KK051202 – Stating variables
EXPLANATION SCORE[Able to state all the three variables correctly]Suggested answer:Manipulated variable : types of pairs of metalsResponding variable: voltage values//potential differenceConstant variable : electrolyte used such as copper(II) sulphate solution.
3
[Able to state any two of the variables correctly] 2[Able to state one of the variables correctly or state idea regardingvariable]
1
No response given / wrong response 0
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17
3(c) KK051202 – Stating hypothesis
EXPLANATION SCORE[Able to state the relationship between manipulated variable andresponding variable correctly]Suggested answer:The further the distance/position between two metals in the electrochemicalseries, the bigger the voltage value.[If the responding variable comes first, the score is 2]
3
[Able to state the relationship between manipulated variable andresponding variable]Suggested answer:The further the distance /position between two metals, the bigger thevoltage value//vice versa
2
[Able to state an idea of the hypothesis]Suggested answer:Metals influence the voltage value
1
No response given / wrong response 0
3(d) KK051205 – List of materials and apparatus
EXPLANATION SCORE[Able to state the list of materialss and apparatus correctly and completely]Suggested answer:Beaker, connecting wires, crocodile clips, voltmeter, sand paper, [magnesiumribbon, zinc strip,lead strip, copper strip], [copper(II) sulphate solution]
3
[Able to state the list of substances and apparatus correctly but notcompletely]Suggested answer:Beaker, connecting wires, voltmeter, [magnesium ribbon, zinc,copper],[copper(II) sulphate solution]
2
[Able to state an idea about the list of substances and apparatus]Suggested answer:Beaker, metals, voltmeter, electrolyte, wire.
1
No response given / wrong response 0
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3(e) KK051204 –Procedure
EXPLANATION SCORE[Able to state a complete experimental procedure]Suggested answer:
1. [30 -200] cm3 of copper(II) sulphate solution is poured into a beaker.2. Magnesium ribbon and copper strip are cleaned with the sand paper.3. Magnesium and copper are dipped into the copper(II) sulphate solution.4. Both metals are connected to a voltmeter.5. The voltmeter reading is recorded.6. The circuit is completed.7. Steps 1 to 6 are repeated by using different of metals to pair with
copper.
3
[Able to state the procedure which include the following steps]Answer: Steps 1,3,4,5,6
2
[Able to state an idea of procedure]Answer: Steps 3,5
1
No response given / wrong response 0
3(f) Tabulation of data
EXPLANATION SCORE[Able to exhibit the tabulation of data correctly ]
Pairs of metals Voltage/V Negative terminal
3
[Able to exhibit the tabulation of data less accurately ]