C]ONFIDENTIAT,

N r n r a :

1541t2(lhem is tryPaper 2OcLTt{ov20082 '/t hours

451U2

' I- ingkatsn ;

JAI]ATAN PEI.A.IARAN TERNNGGANII

PEPERIKSAAN AKHIR TAHUN 2OO8

TINGKATANEMPAT

il ilililil1ililil1ilil1ilil1451U2

CHEMISTR.Y

Paper 2

Two hours and thirty tninutes

4.

Kerlas soalan ini nrenLandungi 20 halarnan bercelak

@ 200t1 tlak cipta I 'KPS\! Cawang|n'Iercngg{nu

CONFIDIIN'TIAL4541t2

.'ANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

Kcrla.s soalat ini adaloh dalqm dwibohasa('okn c:/ihenarkan nenjavub kcscluruhq atau sebahdgiotlsoulon sama oJtt cld/otn Rahav htggeri.r oteu Baha\dh{e Ltytt.

Kerta.t soalan iti rttrng.lrldut1tli tigo boh,_tgian .

Bahagian A. Bahegian B, Bahagiao C.

./ova.4 semua .ronlrln dt an Rthagiat A.lawoh naua-ntuno sttl saalotl .ler4)dda Bzhagian B danBahag ian C .

Kalkttlator suintilik ),dn.q tidak balch diprogramkan boleh

Mottr t,ttn14 dicorlon4ken untuk n(nid\Nab Bahagian A :90 tt i tt i t, ll^hagiar lf : 3 0 ot i n it, llahagian C : 3 0 n in it.

INext pageCONFIDENTIAI,

Un/ttk Ke,qunaan Pe mcrik.su

Bahagian I Soalan Ntarkah

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atrrr*tCONTIDTNTIAL

Section A ll Bqhtglan A

[60 marks l/ 60 markahl

Answer all ouestions in this section.The time suggested to answer this s€ction is 90 minutes.

Jqwqb semao soalan dalam bahagian ini,. Masa yang dicadangkan untuk trcnjowab bqhagian ini iabh m minil.

The melting point ofnaphthalene can be determined by heating solid naphthal€ne until itmelts as shown in tle Diajram l. The temperature ofnaphthalene is recorded at half minuteintervals until th€ temperaturE ofthe naphthalene feaches 90 "C.

Takat lebur naftalenq boleh ditentukan dengan memanaskan pepejal nalialena sehinggaianya melebn seperti ditanjukkan dalam Rajah l. Suhu naftqlena dirckodkan setiap setengahminir sehingga suhu nafalena mencapai gtr"C.

T hermomekt / ter mome I erBoiling tube lta bun g did i h

watet balh I kukus air

Naphthalerc / Nqftalena

tHeat

Panaskan

Diagram IRajah 1

(a) What is the meaning of melting poirt?Apakah maksud takat lebur'!

i ^,,n(b) Stato the type ofparticles that form naphthalene.

Nyatahanjenis zarah yang membentuk nafalena.

l l

(c ) What is the purpose ofusing water bath in the experiment?Apakah lujudn mengglnakan kukus air dalam elsperimen itu?

i ^.rkl

Chemistry Papel ?Year End Examinalion ?008 Form 4

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CONFIDENTIAL 454U2

Why do rve need 1o stir the naphthalone in thc experiment?Mengupekdh kita perlu nengacau uaftalena dalau eksperimen itu?

i ;",:o(e) Sodiurn nitratc has a mclting point of3l0 "C. Can the melting point ofsodjum nitrate be

detcrmined by r.rs'ng thc \\,atcr bath as shown in the Diagram 1 ? Explail your answerN.ilri m ilral nempun)'di tdkat lebur3lD''C. Bolehkah takat lebul ndtrium nitraldltentukan dengon menggunakan kukus air seperti ditunjukkan dalan Rctjah 1?7'e nu g ka n j av, u p un arul a.

12 marksl

(f l The g|aph oftemperature against t ime for the cooling of l iqrrid naphthalene is shorvnoc lo l\()ru.[ tuhu nelo'van maso bagi penyejukan na/iulena ditunjukkan di bau,oh.

Tempcrature/ "C

Suhu / 'C

Tirle/ minMase/ min

Based on the graph, state the melting point of naphthalene?BertLtsarkan gntJ nydtokor takat lebur ndltqlena?

The tempcrature between Q and R is constant. Explain why.,9uhu antura Q dLtn R atlakth tetap. Terangkan nrengapa.

t,)

r00

90

80

10

( i )

( i i )

Chemistry Pdrcr 2Year End Lxa ination 2008 Form 4

[2 narLsl

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CONFIDENTIAL 4541/2

(ii i) Draw the anangement ofparticles ofnaphthalene at RS.

Lukiskttn susunan zarah nafhlena pacla RS

11 narkl

2 (a) Table 2. I shorvs fonnula of several ions.

.la.lual 2.1 menu4iukkan Jormula bagi bebe rPa iott

IoD name Silver ionion argenlum

Zinc ionion zink

Nitrate ionion nilral

Chloridc ionion klorida

Formula ofionFormula ion

Znzn )'J0r Cf

l 'able 2.l. loduul2.l

Write the fonnula for zinc chloride and zinc nilrateTuliskan.fitnula kimia bagi zink klorida dan zink nilrat

Zinc chloridez i n k k l o r i d a | . . . . . . . . . .

Zinc nitratez i n k n i l r d t : . . . . . - . . . . ' .

[2 ntorksl

(b) When silver nirrate solution is added to zinc chloride solution' a white precipitate silvcr

chloride rnd zinc chloride solLrtion produced.

Apahilct luntan argentlm hih.tt ditdtnbahkl kepddd larula zink klotidtr, nendakat putih

argenlum kkfirla dak larula xittk illat lerharil.

( i) Namc thc reactants.N oonkon hu hutt' b ahun I indo k bct I us

ii,,',',*l( i i ) Name the products.

Nanakan hatil-hasil lindak hQlas.

l l natkl

Chemistr! /"per' 2Ye$ Iihd Examotd{ion ?00,! Fornl 4

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CONFIDtrNTIAI, 154U2

l i i i) Write the chemical cquation for t lre reaction take place.Tuiiskan perstnnaan bagi titld.tk balas yang berlaku.

11 narkl

(c) Si lver chloride decomposed *,hen i l is stronsly hcalcd according 1o equation below :,lrgentun nio dt tcruroi tpahila dipanasktn dengan kuat nengiku! personnan ,Ji hav,ah

2AgNOr ---_-) 2Ag + 2NO: * O:

( i) When I mol ofsi lvernitratc is heeted, calcu late nurnber of nrole of si lver and nunrberofmole ofoxygel gas produced..Iiko I t/bI drgcntum nitt.tt dipana,\kdn, hitungkan bi!atgun ntol orgentuot dun hiltngun

o/ gas ok.\igcn yutlg lerhusil.

[2 trnrksl

( i i ) l rr an experiment, a student heated 85 g ofsi lv€r nitrate.Calculate nunrbcr of mole ofsi lver nikete and volume ofrr i trogen dioxidc rcleased atroom condit ion.

I Re lat ive atomic D]ass : r \- , 14 : O, 16 ; Ag, i08 lI mol ofgls occupics 24.0 dm at roonr condit ion ]

])aldn satu eksperitnen, seareng pelajar lel(lh nem.tfia\k(u 85 I argentunt nitrat.l-lillt gkan hiloryan mol Lrrgcntun nilrat dan i\ipedu gds t)ilrogen dioksitla yang tcrbehu.rpada keudoor bilik

L . J i s im a tomre la l i f : N , 14 ;O , l 6 l Ag , 108 1| 1 tnol gdds menetlldti24.() d|.,' pddd k(:adaan bilikl

!| 3 tnrksl

Chemistry Pdler ' - lflor E d L:xaninati()n 200\ Form 4

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CONFIDENTIAL 454t/2

Diagram 3 shows the position ofseven elements A, D, E, C, J, L and M in the Periodic Table.'fhese are not the actual symbols ofthe elemcDts.

Rajah 3 nenunjukkan keduclukan tujuh unsur A,D,D,C,J,LdanMdalan.ladual BerkalaSinbol-simbol yang digunakun atlalah bukan sirnbol sebenaru sur letsebul-

I t 8

Diagram 3Rajah 3

By using the symbols in the Diagram 3, answer the following questions :Dengan menggunaken simhol-.\infio! ddldu Rajah3, jawub soalan-stttlan berikut

(a) State three elements that are metals.Nyalakqn liga unsur-un.tut logam.

[1 narkl

(b) Which elcment forms coloured compound when reacts with other elemenl' lLInsur yang monttkah nembentuk sebdtian berwatna apabila bertindqk b.rlas dengQn un.rurlain?

I norkl

(c) When a small piece ofelement C is Put inb water. an alkaline solulion is ibrmed arrdhydrogen gas is released.

Apabila seketul kecil unsur 6 dinasukkqn ke tlalam air, satu l1rutan beralkali tarbentuk dttngus hidrogen dibe baskax

(i) Write the chernical equation for the above statcmcntTuliskan persamaan kimia unluk penyalaan di qlds.

l l nurkl

State one precaution step that must be taken wlri le carrying out the experiment usinge lement G-Nlarakan satu langkah hetjaga11aga yang pe u dianbil ketikd meialankuneksperiman menggunakan unsur G.

( i i )

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Chemistry P.lper 2Yaar End Exotninotion 2048 Fornr 4

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CONFIDENTIAL 4s4 2

(d) Element L have many applications ir daily l i fe. State one.Unsur L memp nydi banyak kegunaan rlalam kehidupan horian. Nyatakan salu.

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(e) Element J reacts with element D to forn a compound.

Llnsur J bertirulak balas dengan unsur D membentuk satu sebatidn.

(i) Write the chcmical formula for this compound.'I uli*an.formulo kimia bagi sebatian tersebul.

l1 narkl

(ii) I)raw the diagram ofelectron anangement forthe compound that isformed between element J and element D.

Lukiskan gambarajah susuhdn elekton bagi sebdtian ydng terhentuk di anlara un'urI dan unsur D.

[2 narks]

(f) Element A can combine with element E to form a compound.

Llnsur A boleh herpatlu dengcm unsur E untuk membenluk salu sehatidn.

(i) What is the type ofcompound formed?Apakahjeni.J sebdtian yang terbentuk?

ll nark)

(i i) State one physical property ofthe compound.Nyatakan ":itrtu sifat fzikal bagi sebatian itu.

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Chemistry Pdpet 2Year End Examinalion 2008 Forrln 4

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CONFIDENTIAL

Diagrarn 4.1 shows thc set-up ofapparatus of a voltaic cell.Rajuh 4.1 nenunjukkan susunan radas bagi suat seI kintie.

4541t2

Z inc p la leKepingun zink

Clopper piateKepingan kuprum

Copper(l l ) sLrlphate solut ionLarutdn kuprut (ll) lulfhl

Diagran '1. IRujah 1.1

Basecl on Diagram 4.l , answer the fol lotving qr:est ions :Renlosurkan Rtjuh 4.1, luttah soulun-:toalan bsikut :

(a) What is tbe energy change that occurs in the voltaic cel l?,lpukuh perubt nn tenago yang berluku dalu ,tcl kinid:)

l1 norkl

( c )

( b ) Wrile the fbrrnLrla of all ions in copper(l l) s!rlphatc solutiorr.I)tli.tkon farnultr bogi sennn ion dukon lorutun kuprun(l!1 .tulfit

l l ntorkl

( l ' )

( r ) Name the negative tenni al ofthe vol laic cel l .Namakan lerntinal negatif sel kittlkt tersebuL

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E\pl l in yoLrr answe. in (c) ( i) .'ferungka,t j.nl,.tpan anda di (c) (i).

l l nntrk)

( d ) Stalc onc obscrvation at the copper platc.N!-dI(tkattl \alu pctrarhutidn ptkla kcl)ittgd, kurunt.

( i i ) Wri le thc hal l equation for t l le feaction occur at the coppcr plate.

l l nurkl

lNfxt pageC 'ONFIDENTIAL

Che mistry Papr:r ?I'car End tvnindtion 2008 For|J.r 1

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CONFIDtrNTIAL 4341t2

Tuliskan setengah persa aan btrgi tindak balas .vang herluku Txla kepingon

l) narkl

What is the colour change of the coppe(ll)sulphate solution? Explain your answer.Apakah perubahan warna yang berlaku kepada larutan kupntm(Il) sulat. Terangkan

12 mat ksl

Another cxperime t is caffied out by replacing the zinc plate with P, Q and R metals.Table 4.2 shows the results.Satu eksperimen laih dijalankan dengan metrygonlikdn kepingon zink dengan logantP, Q dan R- Jadual 4.2 menunjukkan keputusdn yahg teldh diperolehi

Pair of metalPasangan logam

Volrage / VVohan I V

Negative terrninalTenninql nega f

P/Cu 2.0 P

Q/Cu 2.1 aR,/CU 0.5

Table 4.2Jatlual 4.2

Arrange met!ls P, Q, R and Cu in accending order ofelectroPositivity.Susunkan logamP, Q,R dan Ct mengikut tertib menaik keelektopositifdn

f\ narkl

Predict the voltage value for pair of P/R.Rdmqlkan nilai vofuan bagi parangan PlR.

I narkl

(e)

(r)

( i )

( i i )

Chemistry P.rpel 2Yedr End Exaninatian 2008 Form 4

lNert p&geCONF'IDENTIAL

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CONFIDENTIAL

Chemislry Pdper 2Year End L\amination 2008 Forn 4

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LJ!tr-:-:{

f:'fl

)JJ

Tt t /

5 Diagram 5 sho\r's the set-up of apparatus to investigate th€ reaction betwe€n potassiunlhydroxide solution with sulphuric acid,25.0 cm' of potassium hydroxide solution is put in a conical f lask. A few drop ofphenolphthalein are added to the solution which is f ien titrated with 1.0 mol dn'r sulphuricacid.

Rajah 5 menunjukkan susunan radds untuk mengkaji tindak bolcr antara laruta kqliumhidrokida .lengqn qsid sulfurik. 25.0 cmt lqlutqn kalium hidroksidd climasukkan tlalamkel6lang kon. Beberapq titik /enowalein-ditLtmbah kepada lan dn tersebut.yang kemudiannyadl ralldgun asi,l rrrfrrft 1.0 moldm-'.

1 .0 mo l dm r su lphur ic ac id

asitl sulfurik 1.0 rrol dn-r

25.0 cmr potassium hydroxide solution+ I few drops of phenolphthalein

25.0 cm' larutan kalium hidrolLtida+ behelapa litik fenolfidlein

Diagram 5Rajah 5

(a) (i) Name the type of reaction bct\reen potassium hydroxidc solution andsulphuric acid.Nomaktn jenis tindak bqlas ditdra larulan kdliuttt hidloksidct tlan askl sulfurik.

l\ _,,.n(i i) What is the function of pheoolPhthalein in this experiment.

Apakah Jungsi ;[enolfalein dala ekperimen ini.

1l ,,-r:4

(b) Suggest the apparatus that is used to measure 25.0 cm'ofpt*assium hydroxideaccurately.Ca(langkan r&las l.rng.ligunaken uhtuk nenyukat 25.0 aml larutan futlium hidroksidadengan lePal.

tt ;;;;i

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CON"FIDENTIAL 4541/2

(c) Slate onc observatiolt in thc t i trat iolN.vutdk.rn slttJ penerhatid

ddlatn titl.rtan itu.

l l na*l

Write a chemical eqtlation for the reaction occurs in tlrc conical f lask.'liliskon persamatn kitntu bogi tlndak halus yang berlaku dalam kelolang kon.

1i i l ,1

(i) Calculate the concentration of t lre potassium hydroxidc solution used if 20.0 crl l ofsulphuric is required to react complelely with potassium hl,droxidc in the conicalflask.I litungkan kepekantn bagi lurutan kalium hitlntksida yang <ligunakon jika 20.0 cntlasid sulfurik tliperltkan untuk bertindok balas lengkap dengan kalium hidrok.tidulolan kelolung kon

l l

(d )

( c )

( i i ) Predict the pH value ofsolut ion in t lre conjcal f lask at the end poif l t .ktmulkan nilai pll larutun dulou kelalang kon poda tctAot akhir.

13 narksl

It -or.4

Chcmistry Pdl)er 2lu!" l:nd Lxanination )003 Forn 4

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CONFIDf,NTIAL t2

l)iagram 6 shows a series ofchangcs involving soiid W.Rajuh 6 menunjukkan satu siri perubahan melibatkan pepejal W.

Whitc precipitate RMendakan putih R

Diagram 6Rajah 6

Gas Y is colourless.Cas Z is brown in colour.Solid X is brown in colour when hot and yellow in colour when cold.(;at Y tidak berwarnd.(ias Z hentarna perang.Pepejal X herwarna perang apabila panas dan berv,anta kuning apahila sejuk.

(a ) Ident i f y :Kenalpaslik.tn:

(i) solid / pepejalX:

( i i) gas Y :

( i i i ) sas7 . .

Describe a chemical test to identify the gas Y.Iluraikan satu ujian kimia untuk ntengendl pLlsli gas Y.

lt nurksl

( b )

Chemistry /'dper 2Yeor End bcaninotion 2008 Form 4

12 mtrk.sl

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M.F^"1. [ ,qt . .

l;:::,*.Solid W

Pepejal tN

ltr*Potassium iodide ,.,

Kutiilmioy/,'Anmonia solut ion

\,an tan ummonia

454U2

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C'ONFIDENTIAL l 3 4541/2

(c) (i) Name the carion in solution W.il'antLlkdn k. ii:n dalum larutan tN.

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(i i) Write the ionic equation for thc rcaction betwcen solution W andammonia solution.Tuliskd persamaan ion bagi tindak bqlas antarq solution.W ddn tanidnammoniq.

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(i i i) Name the white precipitate RNamaka Endaklln putih R.

ll nark)

(d) ln another experiment, potassium iodide solution is addcd to solution W.Di dalom eksperinen loin, larutan kalium i<ttlido ditambuhkon kepacla larutan \{.

(i) State what can be observed ,Nyotekcot cea yqng dapat diperhatikan.

l l murk)

( i i ) Namc the reaction that takes place in d (i).Namakan tindok balas yang berlaku tli d (i).

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Chefiistry Papcr 2I'edr Enl Exanindttah 2008 Form 4

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454y2

Seclioo B /BahagianB

120 marks | 20 markahf

Answer any one question.The tim€ suggested to answer this section is 30 minutes.

Jowab mana'mana satu sodldn dalau bahagian ini.Ma:;a yang dicadangkan untuk me jav'ab bqhagidn ini iolah 30 minit.

7 (a) What is meant by electrol)te?Apafuth yang tlinaksudkan dengan elektolit?

ll narkl

(b) Explain why sotid lead(ll) bromide cannot be electrolysed, while molten lead(ll) brornidecan be electrolysecl?Terangkan mengapa pepejal plumbum(l) bromitla tidak boleh dielektrolisis manakalaI e buran plumhumlll) bromida bole h dielektrol isis kan.

13 narksl

(c) An cxperiment is canied out to dedompose solid lead(ll) bromide to lead metal andbrornine gas through electrolysis pioc€ss.Satu eksperimen diialankan untuk nenguraikan pepejal plumbum(l) bronida kepadaIogam pluntbun dan gas brcmin melalui proses elektrolisis.

(i) Draw a labelled diagram to show the set-up ofapparatus used.Lukiskan gambar rajah berlabel .susunan radas yang digunakan.

(i i) Write halfequations at anode and cathode.Tuliskan setengah persaaaan pada anod dan katod.

(i i i) State the observations at anode and cathode.Nyatakdn pemerhdtidn pada anod dan katod.

16 narksl

(d) Table 7 shows two sets ofelectrolysis ofdihrte silver nitrate solution, AgNOI usingdifferent type of electrodes.Jadual T menunjukkan duo set elekvolisb ke a'td,t larutdn argentum nindL A'NOImenggunakan jeni,s elehrod yang berluinan.

ExperimentEksperimen

Type of €lectrodeJeris elektrcd

AnodeAnod

CathodeKatad

IPlatinumPlatinum

PlatiDum

u SilverArgenlum

SilverA/gentum

Table / Jadual 'l

(i) Draw a labelled diagram to show the set-up ofapparatus in Expcriment LI.ukiskan gambarajah berlabel untuk menunjukkan ,susunan taclas dalamEksperimen l.

CONFIDENTIAL

Chet tistry Paper 2Year Encl Exntnindtion 2008 Fo'.m 4

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CONFIDENTIAL

Chemistry Paper 2Year Ln.l F,:aaminulian 2003 Forn 4

l 5 4541/2

lN rx t pa f rcqll! l_r,-J:rjill_{.L

( i i ) Construct a tablc to show I

. ions that rnove to anode and cathode

. halfequations for the reaction at anode and cathode

. observations at anode and cathode

for both cxperiments.

Bind satujdd al untuk menuniukkan :

. Ion yang bergerak ke anod dan katod

. setengah persamaan bQgi lindak halds di anod tlun kotod

o pemerhatian di ahod dan kat(d

bqgi keduct-d d eksPerihek.18 mdrkrl

(iii) Give another factors that influences the product ofelectrolysis at the anode

Nyatakon faktor-faktor ldin yanu memPengctruhi hasil elektrolisis di unod

12 nttr l .r l

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CONFIDENTIAL

rr lj;l)Ji:,)11;t-:- :r_]-l i

r V I I u a s K i iv l - | s a s t { l l

I r l l- - - - - - - - - - - - , , , , - _ _ _ _ i

4541/2

II mrrkl

[2 marks]

14 norL:;l

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r6

Diagram 8 shows a series ofchemical changes of solid Q .Rajah 8 menunjukkan siri perubahan kimia yang berlaku kepada pepajat ().

HeatedDipanaskan

t c^R I- | g '"n I

Diagram 8Rajah 8

(a) Draw a diagram to show the set-up ofapparatus in proccss I (to convert substance e to solid Lland gas R). In your diagram show how gas R is tested.

Lukiskan gambarajah susunan radas untuk prose,s | (untuk menukarkan bahan e kepadtt pepejalU dan gas R). Dalam gambarajah anda tunjukkan bagaimana gas R diujt.

14 marktl

(b) Solution Z is the product formed in process lI.Larutan Z merupokan ha.sil tirulak balas dalam prose,s ll.

( i) Name the possible metal cation in solution Z,Namakdn kation logam yong mungkin dalam lantan Z.

(i i) Describe a confirmatory test for a cation that you have mentioned in b (i).Huraikon s6lu ujian penge.sahan bagi k.ttion yang telah anda nanakan di 6 (i).

IV + metal M+ logam M

Solution W.r solid XLarutan W + pepejalX

+ Dilute nitric acid+ .:tsid nitrik cair

(c) Describe how ta obtain crysial salt V from the solution V.Huraikan bagaimana hablur garam Y diperolehi daripado larutan \ .

Chemistry Paper 2Year End L\amination.?00B Forrn 4

Sol id UI'epejal U

Solid U is blackPepejal U berwarna hitam

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1511t2

(d) Mctal M is nore electropositive that] the metal ions contained ir solution V. In process IV, whennretal M is added into solution V, a chemical reaction occured-Narne the metal M and state an observation for the reaction.

Logam M lebih elektropsitif berbanding ion logam yang terdapat dalam laruld V. Ddla tproses lY, upabih ktgan M ditumhahkan ke daldm ldruton y , suatu tindak bqlas be akuNumukun htgurn M.ldn n.t)utLlkan scttu pemerhdlia unluk linddk holus ter.\ebut.

l2 narksl

(e) 'T he chemicals supplied arc :

. Z inc ox ide

. Sodium carbolrate solutiotr

. I) i lute nitric acid

Describe brielly ho\{ to prepare a sample ofdry zinc carbo ate salt in the laboratory. Include inyour answcr all chemical equations involved.

Bahan kimia yang dibekalkan ialah ;. Zink oksida. Luruldn nabium karbondlc ,4skl nitrik cuir

Hurarkan .secaru ritgkds halgainand unluk menyediukoa .sLrtu contoh galdit aink karbonat yargkering dalau makntal- Sertakan clolttm.jcrwapan anda semua ?ersanlaan kimia yang letlit)dt.

[7 narks)

CONFII)f,NTIAL

Chenisary Paper 2feor End l:xaminatiotl 2003 Form 1

t 1

lNexl p:tgeCONFIDENTIAL

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CONFIDENTIAL 4541/2

Section C lBahsgiqnC120 marks / 20 markah)

Answer any one question.The time suggested to answer this section is J0 rninutes.

Jowab ma d-mana satu soalon dalam bahagiqn ini.Ma,sa yang dicadangkan untuk menjawah bahagian iti ialah 3O mnt.

(a) Sodium is one ofthc Croup I elements in the periodic Table.Diagram 9.I shows thc chemical properties ofsodium.Natrium tnenlpctkan talah sdtu unsur Kumpulan 1 dalam .ladudt Berkata.

Rajah9.l menunjukkah sddl-sifat kinia bagi nat um

Solution Q and gas WLdrutan Q dan gas W

Diagram 9.IRajdh 9.1

(i) Name the solution e and gas W.Namakan larutan Q dan gds W .

12 ua*tl

(i i) Based on reaction R, write the chcmical cquation for the reactlon.State three physical propenies of metal oxide lormed.Betdasarktn tindak balas R, tuliskan peLramaan kimio bagi tintlak balattersebut. Nyatakan tiga sifatfzikal oksido logatn v1n! rerbentuk.

[4 nark:]

(b) ' lransition elemcnts are the elements fiom Group 3 to Group l2 ofthe perrodic .l-able.

Unsur peralihon atlaloh unwr-unsur daripada Ktmpukn 3 hingga Kumpulan 12 dulantJadwl Berkala.

(i) Name one example oftraDsjtion elements.Namdkan satu contoh unsur peralihan.

(i i) State four special characteristic oftransition clements.N))atatkan empqt sdat istimewa unsur peralilten.

[5 narks]

I 8

Chemistry Paper 2fear End Exanihation 2008 Form 4

lNext prgeCONFIDENTIAL

React with water

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*o"n$ ie .T d.15nrz

(c) Diagram 9.2 shows three atomic symbol ofelement X, Y and Z.Diagram 9.2 menunjukkan simbol qlom bagi unsur X,Y dqn Z,

t2 27 40

X Y Z6 13 20

Diagram 9.2Rajah9.2

Construct a table to show the elechon arrangement, group and period ofeachclement.Bina satujadual thtuk menunjukkan susunan elekhon, kuupulan dan kala hagiseliap unsur.

[9 narksl

Chemisary Paper 2Year End Etaminatbn 2008 Form 4

lNert pageEONFIDBNTIAL

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Arnmonitm nitraleAnnoniurn nitat

CONFIDENTIAL

Chemistry Paper 2Yeat Erjd Lranin tion 2A0B Fonn 1

Table l0 shows two types of ferti l izer.Jadual l0 menunjukktu duajenh baja.

20 4541/2

(4.)l0

(b )

Table l{)J.tdual 1l)

Wh iclr substance is a better fcfi i l izer for the gro$ 1lr of plants?Hxplain your answer.Buhan monakuh mertqtukon baja yang lebih b.tik untuk tnlbasarun tunbuh.tn!.Ietaskan ju*apan anda.

I Re la t i ve a lomic nass / J is i Qk)m re la t i f : I l=1 ; C: 12 : N= l4 - ; 0=16 ]14 morksl

(i) Lising a namcd ofmonomer, show how you can lbnn a synthetic polymi,r.Include in your answer the structural lorrrula ofthc mono,,,", ,,,r j ", juati,rnfor thc polymerisation.

Menggulakan nonomer yqng dinamekLln, runjukktn bugaintontt antkt dttltornte n bc n tuk po I i ner s h te I ik.,9ertakan <laltm jawapan cmda lormulo struklur hagi ttohonrr .ldtlper,9 dDiaan un tu k pe mpo I i meraa.

(i i) State two uses ofthe namcd synthetic polyncr pro.lLrced and two rvays ioprevent this polyncr from causing environrncntal pollution.Nralakqn dun kegunaan polinc+,sintctik l,ang dinunufuu.t ttan tluu <:oru unntknutncegalt polirnnr ini ddrip.lda encemarktn alan sekitut.

18 narktl

(i) Name an cxample ofa composit€ nraterial and its original components.How is this composite material made?Nam.rkdn satu contoh hahan kompolit dan htth.tn qsolnya.Bagaimanakuh bahun konposit irti tlibuQl?

(i) State two propenies ofthe composite rnaterial in (c) (i.1.Nvatakan duo sifar buhan konpoit tli (c) (i).

(i i) State onc use ofthe composite narerial in (c) (i) ancl onc usc ofcach ol irsoriginal components.

Nj-atak.n sotu kegunaan hohan konposit di (c) (i) don solr kegMtLrLtn Dttglseliap ltuhan a*tlnya.

l8 aa l t r l

( c )

END OF QTJESTION PAPERKERTAS SOALAN TAMAT

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