Chemistry afterschool2013 - Question and Anwser

99SOALAN ULANGKAJI SPM 2013
JAWAPANbolehdidapatidilamanwebwww.afterschool.my
KPT/JPS/DFT/USD20
Chemistry
Analysis
[4541/1]
[4541/2]
[4541/3]
Paper 1
Paper 2
Paper3
Section A Section B Section C
08 09 10 11 12 08 09 10 11 12 08 09 10 11 12 08 09 10 11 12 08 09 10 11 12
1.
Introduction to
chemistry
- - - - - - - - - - - - - - - - - - - - - - - - -
2.
The structure of
atom
6 10 6 4 6 1/2 1/2 1 1 1/3 - - - - - - - - - - - - - - -
3.
Chemical formulae
and equation
4 7 4 7 7 1/2 - - -
1
1/3
- 1/2 - - - - - - - - - - - - -
4.
Periodic table of
elements
4 3 5 4 2 1 1 1 1 1 - - - - - - - - - - 1 - 1 - -
5. Chemical bond 4 3 3 5 3 - 1/2 1 - 1/3 - - - - - 1
6. Electrochemistry 4 6 5 5 5 - - 1 1 1 1 - - - - - 1 1 - 1 - 1 - - -
7. Acids and bases 4 3 4 4 3 - - 1 1 - - 1 - - - 1 1 - - - - 1 1 - 1
8. Salts 2 2 3 2 1 - - 1 - - - - - - 1 - - - - - - - - 1 -
9.
Manufactured
substances in
industry
4 2 4 3 1 1 1 - - - - - - 1 - - - - - - - - - - -
10. Rate of reaction 2 2 3 3 4 1 1 - 1 - - - 1 - - - - - - 1 - 1 1 1 -
11. Carboncompound 3 5 4 4 6 1 1 - - 1 - 1/2 1/2 - - - - - 1 - 1 - - - -
12.
Oxidation and
reduction 6 3 2 3 6 - - - 1 - - - - - - 1 - - - - - - - - -
13. Thermochemistry 3 2 4 4 4 1 1 - - - - - - - 1 - - 1 - - - - - - 1
14.
Chemical for
consumer 4 1 3 2 2 - - - - 1 1 - 1/2 1 - - - - - - - - - - -
Total 50 50 50 50 50 6 6 6 6 6 2 2 2 2 2 2 2 2 2 2 2 3 3 2 2
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100 SOALAN ULANGKAJI SPM 2013JAWAPANbolehdidapatidilamanwebwww.afterschool.my
Chemistry Paper 1 [4541/1]
1. Which substance is an ionic compound?
A Magnesium, Mg C Magnesium dioxide, MgO
B Carbon dioxide, CO2
D Tetrachloromethane, CCl
2. What is the meaning of molecular formula?
A Formula that shows the type of element in the compound
B Formula that shows how the atoms of elements are bonded
together
C Formula that shows the simplest ratio of atoms of each
element in the compound
D Formula that shows the actual number of atoms of each
element in the compound
3. The diagram shows the arrangement of particles in a substance in
room temperature.
This arrangement of particles can be found in
A Zinc C Helium
B Oxygen D Sodium chloride
4. Table below shows the number of neutrons for chlorine isotopes.
What is the value of X?
A 17 C 19
B 18 D 20
5. Element Y has the same chemical property as the element
with the electron number of 19. The letter of Y is not the actual
symbol of the element.
Which of the following is the electron arrangement for an atom
of element Y?
A 1 C 2.8.2
B 2.1 D 2.8.8.2
6. In the periodic table, J is below K in the same group. If the proton
number of atom K is 12, what is the electron configuration for
ion J?
A 2 C 2.8.2
B 2.8.8 D 2.8.8.2
Each question is followed by either three, four or five options. Choose the best option for each question and then blacken the
correct space on the answer sheet.
7. Diagram below shows the inter-conversion of the state of matter
of a substance

Which inter-conversion involves the absorb of energy?
A water ice C steam water
B ice steam D steam ice
8. The chemical formula for sodium thiosulphate is Na2
S2
O3
.
What is its relative formula mass?
[Relative atomic mass : Na = 23, S = 32, O = 16]
A 39 C 142
B 71 D 158
9. Calcium carbonate, CaCO3
is the main component of marble.
What is the number of particles in 0.5 mol of calcium carbonate?
[Avogadro constant = 6.02 x 1023
mol-1
]
A 3.01 X 1022
C 3.01 X 1023
B 6.02 X 1022
D 3.01 X 1023
10. Which of the following gases contains 0.2 mol of atoms at room
temperature and pressure?
[1 mol of gas occupies the volume of 24 dm3
at room
temperature and pressure]
A 4.8 dm3
He C 4.8 dm3
SO3
B 4.8 dm3
H2
D 4.8 dm3
CO2
11. Table below the melting point and boiling point of substance P,
Q, R, and S.
Which substance is a solid at room temperature?
A P C R
B Q D S
12. The diagram shows the molecular formula for glucose.
Which of the following is its empirical formula?
A CH2
O C C2
H2
O2
B CH2
O2
D C2
H4
O2

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13. The following chemical equation shows the reaction between
Which of the following statements is correct?
A 2 mol of magnesium atoms react with 1 mol of oxygen atom.
B 2 mol of magnesium atoms react with 2 mol of oxygen gas.
C 2 mol of magnesium atoms react with 1 mol of oxygen atom
producing 2 mol of magnesium oxide molecules.
D 2 mol of magnesium atoms react with 1 mol of oxygen
molecules producing 2 mol of magnesium oxide molecules.
14. The diagram shows the electron arrangement of atom Q.

Where is element Q placed in the Periodic Table of Element?
15. Diagram below shows the electron arrangement of atom R and S.

Which of the following is true about R and S?
A Element R is more reactive than element S.
B Both elements R and S react with bromine gas.
C Both elements R and S are monoatomic gas.
D Element R reacts with element S to perform a compound
with formula RS.
16. What are the anions present in aluminium nitrate solution?
A OH-
, NO3
- C Al3+
, NO3
-
B H+
, Al3+
D Al3+
, H+
, OH-
, NO3
-
17. Substance X form white precipitate when added sodium
hydroxide and ammonia solution until excess. It is insoluble in
both excess sodium hydroxide solution and ammonia solution.
What is X?
A Magnesium sulphate C Aluminium sulphate
B Zinc sulphate D Lead (II) nitrate
18. Which statement explains why the size of Potassium atom is
bigger than Lithium atom in the Periodic Table?
A The number of protons in Potassium atom is greater than
Lithium atom.
B The relative atomic mass of potassium atom is greater than
Lithium atom.
C The number of valence electrons is same.
D The number of shells filled with electrons for potassium is
greater than lithium.
19. Elements X and Y dissolve in water to form acidic solutions
which are also bleaching agents.
What is element X and Y?
I. Chlorine III. Iodine
II. Bromine IV. Astatine
A I and II C II and IV
B I and III D III and IV
20. The table below shows the electron arrangement for elements W,
X, Y and Z.
The letters used are not the actual symbol of the elements.
Which of the following is an element that able to form an
amphoteric oxide?
A W C Y
B X D Z
21. The diagram shows the electrolysis of molten lead (II) bromide
using carbon electrodes.

Which half equation shows the reaction at the anode?
A C
B D
22. The following elements located in Period 4 of the Periodic Table
of Elements.
• Chromium, Cr
• Manganese, Mn
• Iron, Fe
• Cobalt, Co
• Nickle, Ni
• Copper, Cu
Which of the following is true about the elements?
A They have a low melting point.
B They do not able to conduct electricity.
C They are able to conduct heat.
D They are able to show same oxidation numbers in their
compounds.
x x x x
x
x
Q
x
x
x
x
x
x
x x x xxx
x
x
x
x
x
x
x x x xxx x xxx R S

23. Diagram below shows the positions of elements P, Q, R, S and T
in the Periodic Table. P, Q, R, S and T are not the actual symbol
of the elements

Which of the following pairs of elements react to form an ionic
compound?
I. S, P III. R, T
II. R, P IV. Q, T
24. Table below shows the proton number of elements E, F, G, and
H.
Based on table above, which two elements that form a
compound with a high melting and a high boiling point?
I. E, F III. F, H
II. E, G IV G, H
B I and III D III only
25. Diagram below shows the set up of the apparatus to plate an iron
key with silver.

After 30 minutes, it is found that no plating took place on the
iron key.
What should be done to ensure electroplating takes place?
A Use a bigger silver rod
B Increase the cell voltage
C Interchange the terminals in the cell
D Rub the iron key with sand paper
26. Diagram below shows the setup of the apparatus to build a
chemical cell.

Which of the following metal can be replaced the iron nail to
obtain the highest voltage reading?
A Tin C Silver
B Lead D Copper
27. Table below shows information about three chemical cells.
Which of the following is the correct descending order of these
metals in the electrochemical series?
A U, T, S, R C R, U, T, S
B R, T, U, S D S, T, U, R
28. Glacial ethanoic shows acidic properties when it is dissolved in
water.
In which pairs of substances does a reaction occur?
A Glacial ethanoic acid + pH paper
B Glacial ethanoic acid + Magnesium ribbon
C Glacial ethanoic acid + Calcium carbonate chips
D Glacial ethanoic acid + Sodium carbonate solution
29. Which medicine can relieve a headache and paint in joint?
A Aspirin C Streptomycin
B Vinegar D Insulin
30. Sulphuric acid, H2
SO4
has the concentration of 0.5 mol dm3
.
What is the volume of sodium hydroxide, NaOH, 1.0 mol dm3
that can neutralize 25.0 cm3
of sulphuric acid, H2
SO4
, solution?
A 6.25 cm3
C 25.00 cm3
B 12.50 cm3
D 50.00 cm3
31. A student is stung by an ant which contains acidic sting.
Which of the following substances is the most suitable to be
applied to the part stung to treat the student?
A Magnesium hydroxide C Cooking oil
B Vinegar D Sodium chloride
32. Diagram below shows the double decomposition reaction
between solution X and solution Y.

Which equation represents reactions to form a precipitate.
I. AgNO3
+ NaCl AgCl + NaNO3
II. ZnCl2
+ Na2
SO4
ZnSO4
+ 2 NaCl
III. CuSO4 + Na2
CO3
CuCO3
+ Na2
SO4
IV. CuSO4
+ Mg(NO3
) Cu(CO3
)2 + MgSO4
33. The diagram shows a polymerization process.

Which of the following properties is identical for substance P
and Q?
A Density C Melting point
B Percentage composition D Relative molecular mass

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34. Why is ceramic used for the wall of object that has higher
temperature?
A Ceramic is very hard
B Ceramic is malleable
C Ceramic is inert towards chemicals
D Ceramic is very high melting point
35. The reaction between calcium carbonate and hydrochloric acid
produces carbon dioxide gas. The reaction is complete in 50
seconds and the maximum volume of gas produce is 25 cm3
.
What is the average rate of the reaction?
A 0.5 cm s-1
C 2.0 cm s-1
B 1.0 cm s-1
D 4.0 cm s-1
36. Zinc reacts with acid to produce hydrogen gas, H2
. Which
solution would give the highest initial rate of reaction?
A 100 cm3
of 1.0 mol dm-3
of nitric acid, HNO3
B 100 cm3
of 1.0 mol dm-3
of hydrochloric acid, HCl
C 100 cm3
of 1.0 mol dm-3
of sulphuric acid, H2
SO4
D 100 cm3
of 1.0 mol dm-3
of ethanoic acid, CH3
COOH
37. Experiment I and Experiment II are carried out as follows:
Which graphs of volume of carbon dioxide collected against
time in both sets is correct?
38. Which of the following statements correctly related to the
collision theory affected by rise in temperature on the reactant
particles?
I. The total surface area of the reactant particles increases
II. The kinetic energy of the reactant particles increases
III. The frequency of the collision between the reactant particles
increases
IV. The number of the reactant particles per one unit volume
increases
A I and II only C III and IV only
B II and III only D I and IV only
39. Oils can be converted to fat by process Q.
Which of the following is process Q?
A hydrogenation C hydration
B Halogenation D dehydration
40. The equation shows the chemical change that occurs to
compound F.
Which of the following is the compound F?
A n – butane C But – 2 – ene
B Prop – 1 – ene D Butan – 2 – ol
41. The diagram below shows the molecular formula of pent – 1 –
ene.
Which of the following are correct names for isomers of pent -1
– ene?
I. pent – 2 – ene III. pent – 3 – ene
II. 3 – methylbut – 1 – ene IV. 2 – methylbut – 2 – ene
A I and IV only C I, II, and IV only
B II and III only D I, II, III, and IV
42. Natural rubber has to be treated first before it can be used to
make car tire.
What is the name of the process?
A Hydrolysis C Vulcanization
B Esterification D Polymerisation
43. Methods below are used to stop iron from rusting.

Which metal is most often used to protect iron in water
pipelines, roofing sheet, and in food containers?
44. A metal W lies between magnesium and iron in the reactivity
series.
Which reaction is W most likely to undergo?
A It liberates hydrogen from dilute hydrochloric acid
B It reduces magnesium oxide to magnesium on heating
C Its forms a hydroxide which dissolves in water
D Its oxide decomposes to give the metal on heating
45. Which statement is correct for all exothermic reactions?
A The reactants gain energy from the surrounding.
B The reactants of the reaction have more energy than the
products.
C The temperature of the reaction decreases.
D The symbol for heat of reaction is ΔH = + kJmol-1
• Coating with zinc
• Coating with tin
• Connecting to magnesium rod
+

46. The reaction between 25 cm3
of 0.5 mol dm-3
copper (II)
sulphate solution, CuSO4
and excess zinc releases 2625 J of heat.
What is the temperature change of the mixture?
[Specific heat capacity of solution = 4.2 J g-1 O
C-1
. Assume that
1cm3
of a solution is equal to 1g of the solution]
A 100C C 200C
B 150C D 250C
47. Table below shows the heat of combustion of methanol, ethanol,
and butanol.
What is the approximate value for the heat of combustion of
propanol?
A 1050 kJmol-1
C 3310 kJmol-1
B 2020 kJmol-1
D 3970 kJmol-1
48. Why are soaps less effective than detergents?
A Soaps decrease the wetting ability of water whereas
detergents increase the wetting ability of water.
B Soaps are biodegradable substances whereas detergents are
non-biodegradable substances
C Soaps form scum in hard water whereas detergents do not
form scum in hard water.
D Soaps are cheap to make whereas detergents are expensive to
manufacture.
49. Diagram below shows the experiment to determine the heat of
neutralization.
Which experiment gives the highest rise in temperature?
50. The diagram below shows the energy diagram for the
precipitation of silver chloride.
Which of the following is true about the diagram?
I. The reaction is exothermic.
II. The heat of reaction is 60.5 kJ mol-1
.
III. The temperature increases during the reaction.
IV. The energy content of the product is higher than the
reactants.
A I and II only C I, II, and III only
B I and III only D I, II, III, IV
END OF QUESTIONS PAPER

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SECTION A
[60 marks]
Answer All Questions
1. Table 1 shows the proton number and nucleon number of four atoms T, U, V, and W.
Table 1
Based on Table 1:
(a) (i) Write the arrangement of V atom.
_____________________________________________________________________ [1 mark]
(ii) How many valence electrons does an atom of U have?
_____________________________________________________________________ [1 mark]
(iii) State the number of shells does an atom of T have.
_____________________________________________________________________ [1 mark]
(iv) Draw the electron arrangement of atom U.
_____________________________________________________________________ [2 marks]
(b) Atom T reacts with oxygen to form a covalent compound.
(i) State two physical properties of covalent compound.
_____________________________________________________________________
_____________________________________________________________________ [2 marks]
(ii) Write the chemical formula of covalent compound formed.
[1 mark]

(iii) Complete the realationship below.
Nucleon number = proton number + [1 mark]

2. The diagram below represents a reaction between hydrogen and oxygen to produce water.
(a) (i) Name the type of particle present in water, H2
O.
_____________________________________________________________________ [1 mark]
(ii) Calculate the relative molecular mass of water.
[Relative atomic mass: H = 1; O = 16]
_____________________________________________________________________ [1 mark]
(b) 20g of hydrogen are reacting completely with excess oxygen to form water.
(i) Write a balanced chemical equation for the reaction.
_____________________________________________________________________ [2 marks]
(ii) Calculate the numbers of moles are the in 20g of hydrogen.
_____________________________________________________________________ [2 marks]
(c) (i) Presence of water can showing the properties of acid.
State the role of water in showing the properties of acid.
_____________________________________________________________________ [1 mark]
(ii) Ethanoic acid, CH3
COOH dissolved in propanone, CH3
COCH, has no effect on blue
litmus paper. Explain this observation.
_____________________________________________________________________
_____________________________________________________________________ [2 marks]

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3. E, F, G, H, J, K, and L are the symbols used to represent elements. They form compounds in which they exist as ions with the
following formulae in the Table 3

Table 3
Based on Table 3:
(a) State the Group of element F in the Periodic Table.
___________________________________________________________________________ [1 mark]
(b) Which element is a noble gas? Explain your answer.
___________________________________________________________________________
___________________________________________________________________________ [2 marks]
(c) (i) State the elements is most likely to form coloured compound and gives a reason for your
answer.
_____________________________________________________________________
_____________________________________________________________________ [2 marks]
(ii) Write the formulae of the two oxides this element is likely to for
_____________________________________________________________________ [2 marks]
(d) (i) Which element forms an amphoteric oxide?

_____________________________________________________________________ [1 mark]
(ii) Write the equation for the reaction of this Oxide with hydrochloric acid.
_____________________________________________________________________ [2 marks]

4. Hydrogen sulphide is a compound of hydrogen and sulphur. Sulphur is an element found in Group 16
of the Periodic Table.
(a) What is a compound?
___________________________________________________________________________ [1 mark]
(b) Name two types of chemical bonds.

___________________________________________________________________________ [1 mark]
(c) (i) What type of bond is formed between the hydrogen and sulphur atom?
_____________________________________________________________________ [1 mark]
(ii) Draw the electron arrangement of the bond formed between hydrogen and sulphur atom.

_____________________________________________________________________ [2 marks]
(d) (i) Hydrogen sulphide has the melting point of – 850C and a boiling point of – 610C.
Write the physical state of hydrogen sulphide at 280C.
_____________________________________________________________________ [1 mark]
(ii) Draw the arrangement of particles in the substance in d (i).

_____________________________________________________________________ [1 mark]
(e) Hydrogen sulphide has the smell of rotten eggs but sodium sulphide has no smell. Explain
why sodium sulphide has no smell?
___________________________________________________________________________
___________________________________________________________________________ [2 marks]

KPT/JPS/DFT/USD20
5. The diagram below shows the reaction between magnesium with sulphuric acid.
Diagram 5
(a) (i) Write the balance chemical equation for the reaction.
_____________________________________________________________________ [1 mark]
(ii) Write an ionic equation for this reaction.
_____________________________________________________________________ [2 marks]
(b) In this reaction, which substance is
(i) oxidised? = __________________________________
(ii) reduced? = __________________________________
(iii) oxidizing agent? = __________________________________
(iv) reducing agent? = __________________________________ [4 marks]
(c) Magnesium also can react with copper (II) sulphate, CuSO4
solution. The chemical equation as follows:
(i) Write half-equations showing what happen to the reactants.
_____________________________________________________________________
_____________________________________________________________________ [2 marks]
(ii) Explain why this is a redox reaction.
_____________________________________________________________________
_____________________________________________________________________ [2 marks]

6. A student carried out an experiment to determine the heat of precipitation for the reaction between lead (II) nitrate,
Pb(NO3
), solution and sodium sulphate, Na2
SO4
solution. In this experiment, 50 cm3
of 2.0 mol dm-3
lead (II) nitrate
solution was added to 50 cm3
of 2.0 mol dm-3
sodium sulphate solution. The result are given below:

Diagram 6
(a) State the meaning heat of precipitation.

___________________________________________________________________________ [1 mark]
(b) Why is a polystyrene cup used in the experiment?

___________________________________________________________________________ [2 marks]
(c) State the type of reaction that occurred in this experiment.

___________________________________________________________________________ [1 mark]
(d) (i) State the colour of the precipitate formed in this experiment.
_____________________________________________________________________ [1 mark]
(ii) Give the reason for observation in (d) (i).
_____________________________________________________________________ [1 mark]
(e) (i) Complete the ionic equation for the reaction that occurred.
_______________
[1 mark]
(ii) Calculate the heat change of the precipitation reaction between lead (II) nitrate and sodium sulphate.
[Specific heat capacity of solution = 4.2 Jg-1 O
C-1
. Assume that 1 cm3
of a solution is equal to
1g of the solution]
_____________________________________________________________________ [2 marks]
(iii) Calculate the heat of precipitation for this experiment.
_____________________________________________________________________ [2 marks]

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7 (a) The following are three examples of chloride salts that can be prepared in the laboratory
• Silver chloride , AgCl
• Lead(II) chloride , PbCl2
• Potassium chloride , KCI
(i) From these examples , identify the soluble and insoluble salts
[2 marks]
(ii) State the reactants for the preparation of lead(II) chloride , PbCl2

[2 marks]
(b) With the aid of a labelled diagram , explain the preparation of soluble salts which are potassium chloride , KCI

[6 marks]
(c) Table 7 shows the observations from some tests carried out from salt X

I.
II.
Table 7
Based on the information in table 7 :
(i) Identify an anion that is present in Test I and describe a chemical test to verify the anion.

[4 marks]
(ii) Identify two cations that are present in Test II and describe a chemical test to verify the cations

[6 marks]
SECTION B
[20 marks]
Answer any one Questions

8. (a) What is meant by the heat of neutralisation? [1 mark]
(b) Two experiments are carried out to compare the heat of neutralisation:
neutralisation
(i) Explain the difference of temperature changes between experiment I and experiment II.
[4 marks]
(ii) Calculate the heat change in Experiment I and Experiment II.
[Specific heat capacity of solution = 4.2 Jg-1 o
C-1
. Assume that 1 cm3
of a solution is
equal to 1g of the solution] [4 marks]
(iii) Based on Experiment I and Experiment II, explain both experiment according to their:
• Balanced equation
• Number of moles of water
• Heat of neutralisation
[11 marks]

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SECTION C
[20 marks]
Answer any one Questions
9. Diagram 9 shows the arrangement of particles of a compound in molten state and solid state.
Diagram 9
(a) The compound can conduct electricity in molten state but cannot do so in solid state.
Name one example of a compound with this property. [1 mark]
(b) Write one of the two half equations for the electrolysis of the compound you named in 9(a). [3 marks]
(c) Draw a labeled diagram of the apparatus that u can use to electrolyse the compound you named in 9 (a).
In your drawing show by using arrows the movement of particles that that occurs in the compound.

[10 marks]
(d) Describe the electrolysis process that occurs in 9 (a).
[6 marks]

10. Table 10 shows the data from Experiment I and Experiment II that were carried out to study the rate of reaction
of zinc with two acids, P and Q.
Table 10
(a) (i) By choosing either experiment I or Experiment II, state the name of the acid used.
Write the chemical equation for the reaction of this acid with zinc.

[2 marks]
(ii) Draw an energy profile diagram for the reaction in 10 (a)(i). On the energy profile
Diagram shows the:
• Heat of reaction, ∆H
• Activation energy without a catalyst, Ea
• Activation energy with a catalyst, Ea
Explain the energy profile diagram.

[10 marks]

(b) Compare the rate of reaction between Experiment I and Experiment II. Explain the difference
in the rate of reaction in the experiments accordingly to the collision theory.

[8 marks]

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[50 marks]
Answer All Questions
1. Diagram 1.1 shows the apparatus set up for the experiment, using metal P and copper. Given that copper is placed at the
positive terminal. The reading of the voltmeter is recorded as shown in Diagram 1.2.
The experiment is repeated using metal Q, R, and S (one at a time) and copper. Voltmeter readings are shown below.
Based on the Diagram 1.2, construct a table to record the reading of the voltages. [3 marks]
(b) Complete the Table 1 based on the experiment.
Table 1
[6 marks]
(c) State one hypothesis for the experiment.
____________________________________________________________________ [3 marks]
(d) Based on the observation shown in the above diagram, arrange metal P, Q, R, S, and copper in descending
order of reactivity.
____________________________________________________________________ [3 marks]
(e) If another metal, T, which is a higher position then Q is used, predict the voltage which will be produced.
____________________________________________________________________ [3 marks]
RAJAH 1.1 / DIAGRAM 1.1
RAJAH 1.2 / DIAGRAM 1.2

2. Diagram 2.1 shows the set up of apparatus to study the reaction of metal oxides with carbon.
(a) Complete Diagram 2.1 by stating the observations for the reaction of metal oxides with carbon powder. [3 marks]
(b) State all the variables in this experiment:
Manipulated variable: ___________________________
Responding variable : ___________________________
Controlled variable : ___________________________ [3 marks]
(c) State the inference that can be made for this experiment.
_________________________________________________________ [3 marks]
(d) Based on the observations in Diagram 2.1, arrange metals M, Z, C, S and carbon in ascending order of reactivity.
[3 marks]
(e) The experiment is repeated by using the oxides of N with carbon powder. The result of the experiment is shown in

Diagram 2.2
How would you determine whether metal M or metal N is higher in the reactivity series?
[3 marks]
Set-up of apparatus Observation on the mixture
Set-up of apparatus Observation on the mixture
Diagram 2.1

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3. Diagram 3 shows the conversation between a teacher and her students.
Diagram 2
Based on the situation, plan a laboratory experiment to study the action of heat on nitrate salts. Your planning should include
the following aspects:
(a) Problem statement
(b) All the variables
(c) Statement of the hypothesis
(d) List of materials and apparatus
(e) Procedure for the experiment
(f) Tabulation of data

[17 marks]

SOALAN ULANGKAJI SPM 2013 79
KPT/JPS/DFT/USD20
Chemistry
Jawapan
Chemistry Paper 1

SOALAN ULANGKAJI SPM 201380
Chemistry Paper 2

KPT/JPS/DFT/USD20

END OF MARKING SCHEME

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Chemistry Paper 3

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END OF MARKING SCHEME

Chemistry afterschool2013 - Question and Anwser

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