2012-chemistry-times-with-answer.pdf

8/14/2019 2012-chemistry-times-with-answer.pdf

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108 SOALAN ULANGKJI SPM 2012

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Chemistry

Analysis[4541/1][4541/2][4541/3] http://cikguadura.wordpress.com/


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109SOALAN ULANGKJI SPM 2012

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Chemistry Paper 1 [4541/1]

1. Diagram 1 shows he elecron arrangemen o an aom oelemen P.

Diagram 1

Wha is he number o valence elecrons in aom P ?

A 7 C 5B 6 D 4

2. Wha are he symbols o he elemens o chromium, copper ,manganese and poassium?

A B C D

3. Te ollowing saemen is abou he arrangemen o heelemens in he Periodic able o Elemens.

Which o he ollowing scieniss made he above saemen?

A Meyer C Mendeleev B Newlands D Dobereiner4. Diagram 2 shows he se-up o he apparaus or elecrolysis.

Diagram 2 Which o he ollowing compounds could be used as

subsance X?

A Ehene, C2H

4

B Sodium chloride soluion, NaClC Chloromehane, CH

3Cl

D Ehyl ehanoae, CH3COOC2H5

P

5. Wha are he ions presen in molen sodium chloride andsodium chloride aqueous soluion?

A B

C D

6. Which o he ollowing soluions can show a pH value o 8?

A 0.1 mol dm-3o ehanoic acid B 0.1 mol dm-3o hydrochloric acid C 0.1 mol dm-3o ammonia soluio D 0.1 mol dm-3o sodium hydroxide soluion

7. Which o he ollowing compounds is a soluble sal?

A Lead(II) iodideB Barium sulphae

C Calcium chlorideD Magnesium carbonae

8. Diagram 3 shows he sages involved in he Conac Processo produce sulphuric acid.

Diagram 3

Which o he ollowing represen he emperaure and hecaalys in sage 1?

A

B C D

9. Which o he ollowing compounds is an organiccompound?

A Calsium carbonae, CaCO3

B Carbonic acid, H2CO

3

C Carbon dioxide, CO2

D Glucose, C

6H

12O

6

emperaure / oC Caalys450 Vanadium(V) oxide200 Vanadium(V) oxide450 Iron powder300 Iron powder

Elemens are arranged in order o increasing aomic

mass in Te Periodic able

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10. Diagram 4 shows he graph o volume o carbon dioxide gasagains ime when 5 g o marble chips is added o 50 cm3o0.2 mol dm-3 hydrochloric acid.

Diagram 4

A wha ime he rae o reacion he highes?

A 1 B

2 C

3 D

4

11. Which saemen is correc abou noble gases? A Exis as diaomic molecules B Do no orm chemical bonds C Form ions wih differen valencies D Combine wih ransiion meals o orm coloured

compounds

12. Which o he ollowing subsances has elecrosaic orcesbeween is paricles?

A Naphhalene C Hydrogen chlorideB Carbon dioxide D Magnesium oxide

13. Acid rain causes he land o become acidic. Farmersneuralize he acidiy in he soil by adding

A lime C zinc nireB sulphur D ammonium sulphae

14. Aom o elemen X has a proon number o 13. Where is Xlocaed in he Periodic able o Elemens?

A B C D

15. Which o he ollowing subsances is made up o aoms? A Argon C Chlorine B Nirogen D Ammonia16. Diagram 5 shows wo examples o medicine Y

PenicillinStreptomycin

Diagram 5

Wha is ype o medicine Y A Hormon B Analgesic C Anibioic D Psychoherapeuic medicine

Group Period3 23 3

13 213 3

17. Diagram 6 shows he se up o apparaus o deermine heempirical ormula or meal oxide.

Which o he ollowing meals is mos suiable o be used inhe diagram 6?

A Lead C Copper B Silver D Magnesium18. Diagram below shows he ormula o a nirae sal

Which o he ollowing are he possible ions o X?

I Silver ion III Carbonae ion

II Hydroxide ion IV Ammonium ion A I and III only C II and III only

B I and IV only D II and IV only19. Baking powder conains sodium hydrogen carbonae. I

reacs wih acidic subsances o release A hydrogen C carbon dioxide

B nirogen D nirogen dioxide

20. A sudy o hree meals M, N and O is carried ou. I isound ha meal M has he highes endency o loseelecron while meal O has he leas endency. I can be

summarised as below:

Which o he ollowing saemens are rue o he meals M,N and O?

I M displaces N rom aqueous N nirae II M will corrode i placed in conac wih O in aqueous

M nirae III N is he posiive erminal in a chemical cell using boh

N and O as elecrodes

IV Te volage or chemical cell using M and O is biggerhan chemical cell using N and O.

A I, II and III only C I, III and IV only

B I, II and IV only D II, III and IV only

21. Which o he ollowing soluions have he same number ohydrogen ions, H+, as in 50 cm3o 0.1 mol dm-3sulphuricacid, H

2SO

4?

I 100 cm3o 0.1 mol dm-3hydrochloric acid, HCl II 50 cm3o 0.2 mol dm-3niric acid, HNO

3

III 100 cm3o 0.1 mol dm-3ehanoic acid, CH3COOH

IV 50 cm3

o 0.1 mol dm-3

phosphoric acid, H3PO4 A I and II only B I and III only C III and IV only D I, II and III only

XNO3

Volume o CO2gas / cm3

Diagram 6


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22. Diagram 7 shows molecular srucure o a polymer.

Diagram 7 Wha is he name o he monomer o he polymer in he

diagram?

A Ehene C Propene B Buene D Chloroehene

23. able 1 shows he relaive aomic mass o helium, carbon,sulphur and copper

able 1 Which o he ollowing saemens is true? [Avogadro constant= 6.0 x 1023mol-1]

A Mass o one copper aom is 64 gB Mass o 1 mol o helium is 8 g

C 32 g o sulphur conains 6.02 x 1023sulphur aomD Mass o one sulphur aom is 32 imes bigger han one

carbon aom

24. Iron(III) ions can be reduced o iron(II) ions by subsanceX. Which o he ollowing is subsance X?

A Zinc B Chlorine waer C Acidified poassium manganae(VII) soluion D Acidified poassium dichromae(VI) soluion

25. Diagram 8 shows he apparaus se-up used o sudy he raeo reacion o calcium carbonae and hydrochloric acid.

Diagram 8Te rae o he above reacion can be increased by

A grinding he marble chips

B lowering he emperaure o hydrochloric acid C using a larger flask D adding waer o hydrochloric acid

26. Diagram 9 represens he srucural ormula o a carboncompound.

Diagram 9 Which o he ollowing alcohol reacs wih propanoic acid o

produce he above compound?

A C

B D

27. Wha is he oxidaion number o nirogen in NO2?

A +2 B +3 C +4 D +6

28. A suden discovered ha a green apple ha was cu inosmaller pieces urned brown afer 15 minues. Which ohe ollowing subsances should be added o preven he

browning o apple.

A Ascorbic acid B Sugar C Alcohol D Lechiin

29. Te ollowing saemen is abou X3+ion.

Which o he ollowing proon numbers and nucleonnumbers shows or aom X?

A B C D

X3+ion has 14 neutrons and 10 electrons.

Proon number Nucleon number10 1410 2713 1413 27


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30. Diagram 10 shows he elecron arrangemen o a compoundormed beween elemen and elemen Q.

Diagram 10 Wha group in he Periodic able o Elemens is elemen Q

locaed?

A 2 C 16 B 8 D 18

31. Which o he ollowing pairs o subsances is mos suiable oprepare copper(II) sulphae sal?

A Copper wih dilue sulphuric acid B Copper(II) chloride wih dilue sulphuric acid C Copper(II) carbonae wih dilue sulphuric acid D Copper(II) nirae soluion wih sodium sulphae

soluion

32 Diagram 11 shows he se-up o apparaus o an elecrolysisprocess.

Diagram 11

Which o he ollowing elecrolyes produce oxygen gas aelecrode X ?

I 1.0 mol dm-3hydrochloric acidII 1.0 mol dm-3 sulphuric acidIII 1.0 mol dm-3poassium nirae soluion

IV 1.0 mol dm-3poassium bromide

A I and II only C III and IV onlyB II and III only D II, III and IV only

33. Te ollowing equaion represens he reacion beween

sodium hydroxide soluion and dilue sulphuric acid.

H2SO

4 + 2NaOH Na

2SO

4 + 2H

2O

Wha is he volume o 0.5 mol dm-3sulphuric acid needed oneuralise 50 cm3 o 0.5 mol dm-3 sodium hydroxide?

A 12.5 cm3 C 50.0 cm3

B 25.0 cm3 D 75.0 cm3

34. Which o he ollowing saemens explains why ceramic issuiable o make an engine block?

A Ceramic is chemically iner B Ceramic is an elecric conducor C Ceramic can wihsand high emperaure D Ceramic has a low specific hea capaciy35. able 2 shows he proon number o elemens S, , U and V.

able 2

Wha is he arrangemen o elemens S, , U and V inascendingorder o aomic size?

A S, , U, V B S, V, , U C V, U, , S D U, , S, V36. C

4H

8is he molecular ormula or isomers X and Y.

Which o he ollowing saemens is rue o isomers X andY?

A X and Y have similar molecular srucure B X and Y have similar chemical properies C X and Y have differen relaive molecular mass D X and Y have similar physical properies

37. Diagram 12 shows curve X obained when 8 g o granulaedzinc (in excess) is reaced wih 50 cm3o 1 mol dm-3sulphuric acid.

Diagram 12

Which o he ollowing reacions produces curve Y?

A 8 g zinc powder + 50 cm3o 2 mol dm-3sulphuric acid B 8 g zinc powder + 50 cm3o 1 mol dm-3o sulphuric

acid C 8 g granulaed zinc + 100 cm3 o 1 mol dm-3o

sulphuric acid D 8 g granulaed zinc + 50 cm3o 2 mol dm-3o sulphuric

acid


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38. Te ollowing saemens are abou aom G and J. Electron arrangement of atom G is 1 Proton number of atom J is 6

Wha is he ormula o he compound ormed beween Gand J?

A JG C J4G

B JG2 D JG

4

39. Caffeine is ound in coffee bean. Is molecular ormular isC

4H

5N

2O. I one coffee bean conains 0.02 mol o caffeine,

deermine he mass o he compound in en coffee beans [Relative Atomic Mass; C, 12 ; H, 1 ; N, 14 ; O, 16] A 0.97 g C 9.70 g B 1.9 g D 19.4 g

40. 7 g o poassium hydroxide is dissolved in disilled waer

o orm 250 cm3o soluion. Wha is he molariy o hepoassium hydroxide soluion?

[Relative Atomic Mass: H,1 ; O,16 ; K, 39]

A 0.03 mol dm-3 C 0.30 mol dm-3

B 0.05 mol dm-3 D 0.50 mol dm-3

41. able 4 shows he proon number o elemen X and Y.

able 4 Which o he ollowing is rue or compound ormed

beween X and Y?

Bonding type Electrical conductivityA Ionic in aqueous and molen sae

B Covalen in aqueous and molen sae C Covalen in aqueous sae only D Ionic in molen sae only

42. able 5 shows he resuls o an experimen or hree chemical

cells P, Q and R .

able 5 Which o he ollowing arrangemens o meals X, Y

and Z is in descending order o elecroposiiviy in heelecrochemical series?

A Z, X, Y C X, Y, Z B Z, Y, X D X, Z, Y

43. Diagram 15 shows curve W obained rom hedecomposiion o 20 cm3o 0.40 mol dm-3hydrogenperoxide soluion, H

2O

2, using 0.2 g o manganese (IV)

oxide as caalys a a emperaure o 30 0C.

Diagram 15

Which o he ollowing experimens will produce curve X?

A B C D

44. able 6 shows he meling and boiling poins o subsances P,Q, R and S.

able 6 Which o he ollowing subsances has he highes kineic

energy a room emperaure? A P C R

B Q D S

45. Te ollowing equaion shows he complee combusion opropene gas.

C3H

6(g) + 9/2 O

2(g) 3CO

2(g) + 3H

2O(g)

Which o he ollowing saemens are rue when 1 mol opropene gas is burn compleely?

[Relative atomic Mass :C3H8, 44 ; O2, 32 ; CO2, 44 ;H

2O, 18, Molar volume of gas 22.4 dm3mol1at S.T.P.]

I Complee combusion o 0.1 mol o propene produces5.4 g o waer

II Complee combusion o 1 mol o propene gasproduces 2 mol o waer

III Complee combusion o 4.2 g o propene requires14.4g o oxygen.

IV Complee combusion o 0.1 mol o propene produces6.72 dm3carbon dioxide gas a s..p.

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


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46. Ammonium sulphae, (NH4)

2SO

4is an example o a

erilizer. Calculae he percenage o nirogen in 1 mole oammonium sulphae.

[Relative Atomic Mass: N, 14 ; H,1 ; S,32 ; O,16]

A 12.12 % B 21.21 %

C 23.23 % D 31.31 %

47. Diagram 16 shows an apparaus se up o invesigae aredoxreacion by ranerring elecrons a a disance.

Diagram 16

In his reacion, elecron flow rom elecrodee P o elecrode Q.Which o he ollowing are he correc soluion or P and Q?

A

B

C

D

Solution X Solution Y

Bromine waerIron(II) sulphae

soluion

Bromine waerPoassium iodide

soluionAcidified poassium

dichromae(VI)soluion

Poassium iodidesoluion

Poassium iodidesoluion

Acidified poassium

dichromae(VI)soluion

48. Meal M orms a chloride compound wih he ormula MCl3.

Given he ormula o chromae (IV) ions is CrO4

2-, hen heormula o M chromae is

A MCrO4 C M(CrO

4)

3

B M2CrO

4 D M

2(CrO

4)

3

49 Diagram 17 shows he process o produce compound J.

Diagram 17

Which o he ollowing srucural ormulas is o compoundJ?

O

||CH

3COCH

2CH

3

O||

CH3COCH

2CH

2CH

3

O ||CH

3CH

2COCH

2CH

3

O ||CH

3CH

2COCH

2CH

2CH

3

50. Te empirical ormula o a hydrocarbon is CH2. Is relaive

molecular mass is 56. Wha is he molecular ormula o hehydrocarbon?

[Relative atomic mass: H, 1; C, 12]

A. C3H

8

B. C4H

8

C. C4

H10 D. C

5H

10

A

B

C

D



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2. Diagram below shows he graph o emperaure agains ime when solid o P is heaed.

Time/s

Temperature/oC

63

259

A

B C

D E

F

(a) Wha is meaning o meling poin? _____________________________________________________________________ [ 1 mark ]

(b) Sae he meling poin and boiling poin o subsance P.

Meling poin : ________________________________________________________ Boiling poin : ________________________________________________________ [2 marks]

(c) Explain why emperaure unchanged a BC? _____________________________________________________________________ [ 1 mark ]

(d) Complee he able below by saing he physical sae o subsance P.

[2 marks]

(e) able below shows he meling poin and boiling poin o our subsances.

(i) Wha is he physical sae o R and S a room emperaure?

R : _______________________________________________________ S : _______________________________________________________ [2 marks] (ii) Draw he arrangemen o paricles o a room emperaure.

[ 1 mark ]


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3. Diagram below shows he chemical change occurred in copper compound.

II I

III IV

Copper(II) carbonate

Copper(II) oxide

Copper metal

Copper(II) sulphate solution

(a) Copper(II) carbonae is convered o copper(II) oxide in reacion I. (i) Sae he colour o copper(II) oxide. _____________________________________________________________________ [1 mark] (ii) Wrie he chemical equaion or he reacion I.

_____________________________________________________________________ [2 marks]

(iii) 4.0g copper(II) oxide is produced rom he reacion I. Calculae mass o copper(II) carbonae used? [Relative Atomic Mass : Cu, 64 ; O, 16 ; C, 12]

[2 marks]

(b) Copper meal can be changed o copper(II) sulphae soluion in process III and hen o copper(II) carbonae in process II. (i) Name he process II. _____________________________________________________________________ [1 mark] (ii) Sugges he subsances ha used in process II and process III. Process II :___________________________________________________

Process III :___________________________________________________ [2 marks]

(c) Copper(II) oxide can be reduced o copper meal by passing he dry hydrogen gas. Draw a labeled diagram how o producecopper meal rom he copper(II) oxide in he lab.

[2 marks]

4. Equaion below shows he energy release rom he reacion o iron and copper(II) sulphae soluion.(Relative Atomic Mass : Cu, 64 ; Water heat specific capacity, 4.2 Jg1OC1)

(a) Name he reacion represened by he equaion above? _____________________________________________________________________ [1 mark]

Fe + CuSO4 Cu + FeSO4 H = 200kJmol

1


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(b) Wha mean H = 200kJmol1rom he equaion above? _____________________________________________________________________ [1 mark]

(c) Draw he energy level diagram or his reacion.

[3 marks]

(d) I excess iron powder is added o he 100 cm3copper(II) sulphae soluion 0.25 moldm3, calculae: (i) emperaure rise rom his equaion.

[3 marks]

(ii) Mass o copper ormed.

[1 mark]

(e) I iron powder is displaced by magnesium powder, predic he value o H wheher higher or lower han 200 kJmol1.Explain why?

________________________________________________________________________________________________________________________________________ [2 marks]

() Name one anoher meal ha canno displace copper rom copper(II) sulphae soluion. _____________________________________________________________________ [1 mark]

5. Diagram above he srucural ormula o organic compound, P.

(a) Name he compound P. _____________________________________________________________________ [1 mark]

(b) When compound P is burn compleely in excess oxygen, 5.4g o waer produce. (i) Wrie he equaion or he combusion o compound P in excess oxygen. _____________________________________________________________________ _____________________________________________________________________ [2 marks]

(ii) Calculae he mass o compound P used? [Relative Atomic mass: C, 12 ; H, 1]

[3 marks]

H H H H| | | |

H C = C C CH| |H H Compound P


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Substance X + glycerol fats + substance Y

(c) Equaion above shows he reacion involve in manuacure o as. Sae subsance X and subsance Y.

Subsance X : ___________________________________________________________ Subsance Y : ___________________________________________________________

[2 marks]

(d) Sae he homologous series o as. _____________________________________________________________________ [1 mark]

(e) Fas can be divided ino sauraed as and unsauraed as. (i) Name he process o conver unsauraed as o he sauraed as. _____________________________________________________________________

(ii) Sae he caalys used in his process._____________________________________________________________________ [2 marks]

6. A suden carried ou wo experimens o invesigae he acor ha affecs he rae o reacion.

(a) (i) Wrie he chemical equaion or his reacion. _____________________________________________________________________ [2 marks]

(ii) Calculae he maximum volume o hydrogen gas released a room condiion in hese experimens. [Molar volume of gas at room condition, 24 dm3mol-1] [2 marks]

(b) Calculae he average rae o reacion or experimen 1 and experimen 2.

[2 marks] (c) Te volume o gas released in experimen 1 is skeched in he diagram below.

Skech he curve or experimen 2 in diagram above. [1 mark]

(d) Explain why he rae o reacion experimen 2 is higher han experimen 1 according he collision heory.

_____________________________________________________________________ [3 marks]

Volume of gas/ cm3

Time / s


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SECTION B[20 marks]

Answer any onequesion rom his secion

7. Diagram below shows he apparaus se up or he elecrolysis o copper(II) sulphae soluion using carbon and copperelecrodes. Afer 30 minues he changes was observed.

(a) Based on he diagram above, sae he acor ha deermines he produc ormed a elecrode X and Y. [2 marks] (b) Explain he reacion a elecrode X and Y. Include he ollowing in your explanaion. List all the ions present in the electrolyte List of ions aracted to each electrode Name of the ion selectively discharge and ion formed at electrode. Te reason why the ions selective discharge at cathode Half equation for the reaction at the each electrode. [10 marks] (c) Copper elecrode X is replaced by carbon elecrode. (i) Sae he ype he reacion a his elecrode. Give a reason.

(ii) Wrie he hal equaion or he reacion a his elecrode. [4 marks]

(d) Diagram below shows he simple volaic cell.

Elecron flows rom meal Q o meal P. Ideniy he negaive erminal and posiive erminal in his simple volaic.Sae he observaion in each erminal. [4 marks]

8. (a) (i) By sae an example o reacion beween acid and meal, explain he redox reacion in erms o change

in oxidaion number. [4 marks] (ii) By sae an example, explain why double decomposiion reacion no a redox reacion? [3 marks]

(b) Reacion beween copper(II) sulphae soluion and zinc meal also is an example o redox reacion.(i) Name and wrie he hal equaion o his reacion o show oxidaion and reducion process. [5 marks]

(ii) Sae wo observaions ha you can observe. Explain why. [4 marks]

(iii) Copper(II) sulphae soluion is replaced by he iron(III) chloride soluion. Sae wo observaionsand deermine he oxidizing and reducing agen. [4 marks]

Copper (II)


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SECTION C[20 marks]

Answer any onequesion rom his secion

9. (a) Sal is very imporan in our daily lie. (i) Sae wha is sal? [2 marks] (ii) Zinc nirae is an example o soluble sal. Sae our reacions how o prepare zinc nirae and wrie

chemical equaion or he each reacion. [8 marks] (b) A suden wans o prepare 100 cm3soluion o sodium hydroxide 0.2 mol dm-3.

[Relative Atomic Mass: Na, 23 ; O, 16 ; H, 1]

(i) Calculae he mass o sodium hydroxide necessary o prepare his soluion. [3 marks]

(ii) Explain how we wan o prepare 100 cm3sodium hydroxide soluion 0.1 mol dm3rom he soluionin (b)(i) hrough diluion process.

[7 marks]

10. (a) Ehene is an example hydrocarbon compound. (i) W ha is mean by hydrocarbon and sae he hologous series o ehene.

[2 marks]

(ii) Ehene is bubble hrough bromine waer. Wha is observaion and sae he ype o reacion ha occurred.Give he name and draw he srucure ormula o he produc.

[4 marks]

(b) A hydrocarbon Z conains 82.75% o carbon by mass. [Relative Molecular Mass : C, 12 ; H,1]

(i) Calculae he empirical ormula o Z. [4 marks] (ii) Deermine he molecular ormula o Z i is Relaive Molecular Mass is 58. [3 marks] (iii) Draw and name he all o isomers o compound Z.

[4 marks] (c) Explain why vulcanised rubber more elasic han naural rubber. [3 marks]


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Chemistry Paper 3 [4541/3]

Answer allquesions

1 Diagram 1.1 shows he se-up o apparaus used in an experimen o deermine he posiion o differen meals in he

elecrochemical series by measuring he volage o differen pairs o meals.

Te experimen is repeaed by replacing meal M wih meals N, P and Q and sal soluion o M wih he respecive sal soluionso N, P and Q. Te copper elecrode is he posiive erminal in all he experimens.

Diagram 1.1



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Diagram 1.2 shows he volmeer readings o all he experimens.

(a) Record he volmeer readings in he spaces provided in Diagram 1.2.[3 marks]

(b) Consruc a able o record he volmeer reading or he differen pairs o meals.

[3 marks] (c) Sae one hypohesis based on his experimen. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ [3 marks]

(d) Sae he observaions ha can be made or his experimen afer 20 minues a:

(i) Te negaive erminal

_____________________________ _________________________________________

(ii) Te posiive erminal

_____________________________ _________________________________________

(iii) Te copper(II) sulphae soluion __________________________ ____________________________________________ [3 marks]

Diagram 1.2


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(e) Explain your answer or (d) (iii). _____________________________________________________________________ _____________________________________________________________________ [3 marks]

() Sae he operaional definiion or he posiion o meals in he elecrochemical series. _____________________________________________________________________

_____________________________________________________________________ [3 marks]

(g) For his experimen, sae: (i) Te manipulaed variable ______________________________________________________________________ (ii) Te responding variable ______________________________________________________________________ (iii) Te consan variable ______________________________________________________________________ [3 marks] (h) Based on he volmeer readings, arrange all he meals in ascending order o heir elecroposiiviy. ______________________________________________________________________ [3 marks]

(i) Te experimen is repeaed by using differen pairs o meals as shown in able 1. Predic he posiive erminal andhe volage or each pair o meals by compleing he able.

[6 marks]

able 1

(j) Te ollowing is a lis o chemical subsances: Sodium chloride Silver chloride Zinc sulphate Lead(II) sulphate

Classiy hese subsances ino subsances ha can be made as an elecrolye and subsances ha canno be made as anelecrolye.

[3 marks]


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2 Diagram 2.1 shows wo mehods o dissolving sugar cubes o make sugar soluion.

Diagram 2.1

A group o sudens discovered ha i is aser o dissolve he sugar cubes o make sugar soluion by using ho waer raher hancold waer. Tis is due o he difference in he emperaure o he waer.

Reerring o he siuaion above, plan a laboraory experimen o invesigae he effec o emperaure on he rae o reacionbeween sulphuric acid and sodium hiosulphae soluion.

Your planning should include he ollowing aspecs.

a) Saemen o he problem

b) All he variables

c) Saemen o he hypohesis

d) Liss o subsances and apparaus

e) Procedure

) abulaion o daa

[17 marks]

END OF QUESION PAPER


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SOALAN ULANGKJI SPM 2012

Chemistry

Jawapan

Chemistry Paper 1



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Chemistry Paper 2



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Chemistry Paper 3



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Documents

2012-chemistry-times-with-answer.pdf