Chemistry Exam Form 5

8/12/2019 Chemistry Exam Form 5

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99SOALAN ULANGKJI SPM 2013

JAWAPANbolehdidapatid

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Chemistry

Analysis[4541/1]

[4541/2]

[4541/3]

Paper 1 Paper 2

Paper3Section 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. Te 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. Carbon compound 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. Termochemistry 3 2 4 4 4 1 1 - - - - - - - 1 - - 1 - - - - - - 1

14. Chemical forconsumer 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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Chemistry Paper 1 [4541/1]

1. Which subsance is an ionic compound? A Magnesium, Mg C Magnesium dioxide, MgO B Carbon dioxide, CO

2 D erachloromehane, CCl

2. Wha is he meaning of molecular formula? A Formula ha shows he ype of elemen in he compound B Formula ha shows how he aoms of elemens are bonded

ogeher C Formula ha shows he simples raio of aoms of each

elemen in he compound D Formula ha shows he acual number of aoms of each

elemen in he compound

3. Te diagram shows he arrangemen of paricles in a subsance inroom emperaure.

Tis arrangemen of paricles can be found in A Zinc C Helium B Oxygen D Sodium chloride

4. able below shows he number of neurons for chlorine isoopes.

Wha is he value of X? A 17 C 19 B 18 D 20

5. Elemen Y has he same chemical propery as he elemenwih he elecron number of 19. Te leter of Y is no he acualsymbol of he elemen.

Which of he following is he elecron arrangemen for an aomof elemen Y?

A 1 C 2.8.2 B 2.1 D 2.8.8.2

6. In he periodic able, J is below K in he same group. If he proonnumber of aom K is 12, wha is he elecron configuraion forion J?

A 2 C 2.8.2 B 2.8.8 D 2.8.8.2

Each quesion is followed by eiher hree, four or five opions. Choose he bes opion for each quesion and hen blacken hecorrec space on he answer shee.

7. Diagram below shows he iner-conversion of he sae of materof a subsance

Which iner-conversion involves he absorb of energy? A waer ice C seam waer B ice seam D seam ice

8. Te chemical formula for sodium hiosulphae is Na2S

2O

3.

Wha is is relaive formula mass? [Relaive aomic mass : Na = 23, S = 32, O = 16] A 39 C 142 B 71 D 158

9. Calcium carbonae, CaCO3is he main componen of marble.

Wha is he number of paricles in 0.5 mol of calcium carbonae?[Avogadro consan = 6.02 x 1023mol-1]

A 3.01 X 1022 C 3.01 X 1023

B 6.02 X 1022 D 3.01 X 1023

10. Which of he following gases conains 0.2 mol of aoms a roomemperaure and pressure?

[1 mol of gas occupies he volume of 24 dm3a room

emperaure and pressure] A 4.8 dm3He C 4.8 dm3SO3

B 4.8 dm3H2 D 4.8 dm3 CO

2

11. able below he meling poin and boiling poin of subsance P,Q, R, and S.

Which subsance is a solid a room emperaure? A P C R B Q D S

12. Te diagram shows he molecular formula for glucose.

Which of he following is is empirical formula? A CH

2O C C

2H

2O

2

B CH2O

2 D C

2H

4O

2



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23. Diagram below shows the positions o elements P, Q, R, S and in the Periodic able. P, Q, R, S and are not the actual symbolo the elements

Which o the ollowing pairs o elements react to orm an ioniccompound?

I. S, P III. R, II. R, P IV. Q,

A I and II C II and IV B I and III D III and IV

24. able below shows the proton number o elements E, F, G, andH.

Based on table above, which two elements that orm acompound with a high melting and a high boiling point? I. E, F III. F, H II. E, G IV G, H

A I and II C II and IV B I and III D III only

25. Diagram below shows the set up o the apparatus to plate an ironkey with si lver.

Afer 30 minutes, it is ound that no plating took place on theiron key.

What should be done to ensure electroplating takes place? A Use a bigger silver rod

B Increase the cell voltageC Interchange the terminals in the cell

D Rub the iron key with sand paper

26. Diagram below shows the setup o the apparatus to build achemical cell.

Which o the ollowing metal can be replaced the iron nail toobtain the highest voltage reading?

A in C Silver B Lead D Copper

27. able below shows inormation about three chemical cells.

Which o the ollowing is the correct descending order o thesemetals in the electrochemical series?

A U, , S, R C R, U, , S B R, , U, S D S, , U, R

28. Glacial ethanoic shows acidic properties when it is dissolved inwater.

In which pairs o 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, H2SO4has the concentration o 0.5 mol dm

3

. What is the volume o sodium hydroxide, NaOH, 1.0 mol dm3that can neutralize 25.0 cm3o sulphuric acid, H

2SO

4, 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 o the ollowing substances is the most suitable to beapplied 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 reactionbetween solution X and solution Y.

Which equation represents reactions to orm a precipitate. I. AgNO

3+ NaCl AgCl + NaNO

3

II. ZnCl2+ Na

2SO

4 ZnSO

4+ 2 NaCl

III. CuSO4 + Na2CO

3 CuCO

3+ Na

2SO

4

IV. CuSO4+ Mg(NO

3) Cu(CO

3)2 + MgSO

4

A I and II C II and IV B I and III D III and IV

33. Te diagram shows a polymerization process.

Which o the ollowing properties is identical or substance Pand Q?

A Density C Melting point B Percentage composition D Relative molecular mass


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34. Why is ceramic used or the wall o object that has highertemperature?

A Ceramic is very hardB Ceramic is malleableC Ceramic is inert towards chemicals

D Ceramic is very high melting point

35. Te reaction between calcium carbonate and hydrochloric acidproduces carbon dioxide gas. Te reaction is complete in 50

seconds and the maximum volume o gas produce is 25 cm3.

What is the average rate o 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 o reaction? A 100 cm3o 1.0 mol dm-3o nitric acid, HNO

3

B 100 cm3o 1.0 mol dm-3o hydrochloric acid, HCl C 100 cm3o 1.0 mol dm-3o sulphuric acid, H

2SO

4

D 100 cm3o 1.0 mol dm-3o ethanoic acid, CH3COOH

37. Experiment I and Experiment II are carried out as ollows:

Which graphs o volume o carbon dioxide collected againsttime in both sets is correct?

38. Which o the ol lowing statements correctly related to thecollision theory affected by rise in temperature on the reactantparticles?

I. Te total surace area o the reactant particles increases II. Te kinetic energy o the reactant particles increases III. Te requency o the collision between the reactant particles

increases IV. Te number o 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 at by process Q. Which o the ollowing is process Q? A hydrogenation C hydration B Halogenation D dehydration

40. Te equation shows the chemical change that occurs tocompound F.

Which o the ollowing is the compound F? A n butane C But 2 ene B Prop 1 ene D Butan 2 ol

41. Te diagram below shows the molecular ormula o pent 1 ene.

Which o the ollowing are correct names or isomers o 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 beore it can be used tomake car tire.

What is the name o the process? A Hydrolysis C Vulcanization B Esterification D Polymerisation

43. Methods below are used to stop iron rom rusting.

Which metal is most ofen used to protect iron in waterpipelines, roofing sheet, and in ood containers?

44. A metal W lies between magnesium and iron in the reactivityseries.Which reaction is W most likely to undergo?

A It liberates hydrogen rom dilute hydrochloric acid B It reduces magnesium oxide to magnesium on heating C Its orms a hydroxide which dissolves in water D Its oxide decomposes to give the metal on heating

45. Which statement is correct or all exothermic reactions? A Te reactants gain energy rom the surrounding. B Te reactants o the reaction have more energy than the

products. C Te temperature o the reaction decreases. D Te symbol or heat o reaction is H = + kJmol-1

Coating with zinc

Coating with tin

Connecting to magnesium rod

+


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46. Te reacion beween 25 cm3of 0.5 mol dm-3copper (II)sulphae soluion, CuSO

4and excess zinc releases 2625 J of hea.

Wha is he emperaure change of he mixure? [Specific hea capaciy of soluion = 4.2 J g-1OC-1. Assume ha

1cm3of a soluion is equal o 1g of he soluion] A 10C C 20C B 15C D 25C

47. able below shows he hea of combusion of mehanol, ehanol,

and buanol.

Wha is he approximae value for he hea of combusion ofpropanol?

A 1050 kJmol-1 C 3310 kJmol-1

B 2020 kJmol-1 D 3970 kJmol-1

48. Why are soaps less effecive han deergens? A Soaps decrease he weting abiliy of waer whereasdeergens increase he weting abiliy of waer.

B Soaps are biodegradable subsances whereas deergens arenon-biodegradable subsances

C Soaps form scum in hard waer whereas deergens do noform scum in hard waer.

D Soaps are cheap o make whereas deergens are expensive omanufacure.

49. Diagram below shows he experimen o deermine he hea ofneuralizaion.

Which experimen gives he highes rise in emperaure?

50. Te diagram below shows he energy diagram for heprecipiaion of silver chloride.

Which of he following is rue abou he diagram? I. Te reacion is exohermic. II. Te hea of reacion is 60.5 kJ mol-1.

III. Te emperaure increases during he reacion. IV. Te energy conen of he produc is higher han he

reacans.

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]

AnswerAllQuestions

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]



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2. Te diagram below represents a reaction between hydrogen and oxygen to produce water.

(a) (i) Name the type of particle present in water, H2O.

_____________________________________________________________________ [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, CH3COOH dissolved in propanone, CH

3COCH, 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. Tey form compounds in which they exist as ions with thefollowing formulae in the able 3

able 3

Based on able 3: (a) State the Group of element F in the Periodic able. ___________________________________________________________________________ [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]


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4. Hydrogen sulphide is a compound of hydrogen and sulphur. Sulphur is an elemen found in Group 16of he Periodic Table.

(a) Wha is a compound? ___________________________________________________________________________ [1 mark]

(b) Name wo ypes of chemical bonds.

___________________________________________________________________________ [1 mark]

(c) (i) Wha ype of bond is formed beween he hydrogen and sulphur aom? _____________________________________________________________________ [1 mark]

(ii) Draw he elecron arrangemen of he bond formed beween hydrogen and sulphur aom.

_____________________________________________________________________ [2 marks]

(d) (i) Hydrogen sulphide has he meling poin of 85C and a boiling poin of 61C. Wrie he physical sae of hydrogen sulphide a 28C. _____________________________________________________________________ [1 mark]

(ii) Draw he arrangemen of paricles in he subsance in d (i).

_____________________________________________________________________ [1 mark]

(e) Hydrogen sulphide has he smell of roten eggs bu sodium sulphide has no smell. Explain why sodium sulphide has no smell? ___________________________________________________________________________ ___________________________________________________________________________ [2 marks]


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5. Te 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, CuSO4solution. Te 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]


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6. A student carried out an experiment to determine the heat of precipitation for the reaction between lead (II) nitrate,Pb(NO

3), solution and sodium sulphate, Na

2SO

4solution. In this experiment, 50 cm3of 2.0 mol dm-3 lead (II) nitrate

solution was added to 50 cm3of 2.0 mol dm-3sodium sulphate solution. Te 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 OC-1. Assume that 1 cm3of 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) Te 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) able 7 shows the observations from some tests carried out from salt X

I.

II.

able 7

Based on the information in table 7 : (i) Identify an anion that is present in est I and describe a chemical test to verif y the anion.

[4 marks]

(ii) Identify two cations that are present in est II and describe a chemical test to verify the cations

[6 marks]

SECTION B

[20 marks]Answer anyoneQuestions



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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 oC-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 anyoneQuestions

9. Diagram 9 shows the arrangement of particles of a compound in molten state and solid state.

Diagram 9

(a) Te 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]


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10. Table 10 shows the data from Experiment I and Experiment II that were carried out to study the rate of reactionof 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 differencein the rate of reaction in the experiments accordingly to the collision theory.

[8 marks]



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[50 marks]AnswerAllQuestions

1. Diagram 1.1 shows the apparatus set up for the experiment, using metal P and copper. Given that copper is placed at thepositive terminal. Te reading of the voltmeter is recorded as shown in Diagram 1.2.

Te 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 able 1 based on the experiment.

able 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 descendingorder of reactivity.

____________________________________________________________________ [3 marks]

(e) If another metal, , which is a higher position then Q is used, predict the voltage which will be produced.

____________________________________________________________________ [3 marks]

RJAH 1.1 / DIAGRM 1.1

RJAH 1.2 / DIAGRM 1.2



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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) Te experiment is repeated by using the oxides of N with carbon powder. Te 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 includethe 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]



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Chemistry

Jawapan

Chemistry Paper 1



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Chemistry Paper 2



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Chemistry Paper 3



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Chemistry Exam Form 5

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