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NAMA-TIIIGKATAN
MAJLIS PENGETUA SEKOLAH MALAYSIA
- SAWANGAN_PU EilU PINANG-
MODUL PENILAIAN SPM 2013KIMIAK ertas 2
September
2Yziam
454112
Dua jam tiga puluh minit
JANGAN BUKA KEHTAS SOALAN INI SEHINGGA DIBERITAHU.
L, Tulis nalna dan tingkatan anda pada ruang
yang disediakan.
2. Kertas soalan ini dalam dwibahasa,
3. , soalan dalam bahasa lnggeris mendahului - -
soalan yang sepadan dalam Bahasa Melayu.
4, Ca lon di bena rk_a n m_eltjaryq_b_k$elgu|a n_
atau sebahagian soalan sama ada dalam
Bahasa lnggeris atau Bahasa Melayu.
5. Calon dikehendaki membaca maklumat di
halaman 21.
*- www.myschoolchildren.com
Untuk Kegunaan Pemeriksaan
Bahagian SoalanMarkah
Penuh
Markah
Diperolehi
1 10
2 10
3 10
__! t0
5 10
6 10
B
7 20
8 20
9
9 20
10 2A
Jumlah
Kertas soalan ini mengandungi 22 halaman bercetak
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Section A
Bahagian A
[60 marksJ
[60 markahJ -
Jawab semua soalan dalam bahagian ini.
. Diagram 1 shows the symbols of the atoms of element X, element Y and element Z, Theletters used are not the actual symbols of the elements.
Raiah I menuniukkan simbol atom unsur X,unsur Y dan unsur Z. Huruf yang digunakanadalah bukan simbol sebenar unsur itu
23
11
{9
I
1(aXi)
Diagram 1_ __
Rajah 1
(i) what is the number of neutrons of the atom of elernent X.
A p a kah bi Ia ngan 0 e.u t rqLb_ag i -a!p m tt ns ut_X,
12
6
Y
1(aXii) (ii)Element
Xhas
a meltingpoint
ofg8o0.
. at room temperature.
Unsur X mempunyai takat lebur ggc.pada suhu bilik.
[1 mark]
[1 markah]
Predict the physical state of element X
Ramalkan keadaan fizikal bagi unsurX
[1 mar(
ft markahJ
(iii) Element X reacts with water to form XOH solution and hydrogen gas. Write a
balanced chemical equation for the reaction.
-Unsff X-Iiemnda* tra:ldC denganeiir uifnk'mmQhasilkari'tarifen XOfl dan-gaihidrogen 'Tufis persamaan kimia yang seimbang bagi tindak balas tersebut.
[2 marksJ
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(b) (i) State the nucleon number of the atom of elementZ.Nyatakan noiiiboi'nuneon-dagi ffiin unsur Z.
, /t_ L:tr (or(t,
m
1(bxii)
1(cXi)
[1 mark]
- -[lnarkah]
(ii) Draw the electron arrangement of ion Z.
Lukis susunan elektron bagi ion Z.
(c) (i) Atom W is an isotope of atom Y.
Atom W ialah isotop bagi atom Y.
[1 mark]
ft markahl
State the number of protons in atom W.
Nyatakan bilangan proton dalam atom W.
[1 mark]
[1 markah]
(ii) State the use of isotope of atom W.
Nyatakan kegunaan isotop atom W, 1(cXii)
[1 mark]
[1 markah]
(d) Why are elements Y and Z placed in the same period?
Mengapakah unsur Y dan Z terletak dalam kala yang sama?
[1 mark]
[1 markah]
(e) Choose an element that is a halogen.
F-itih satu unsur halagen, -- - 1(e)--* *
a........a.... .....a
[1 mark]
fi markahl
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2(a)
2. Propene is composed of carbon and hydrogen only, The percentage of carbon andhydrogen in propene are 85.7Yo and 14,3o/o respectively.
[Relative atomic mass : H, 1 i C,12;Volume of one mole of gas at room temperature is 24 dmsl
lsi padu I mol gas pada suhu bilik ialah 2l dmsl
(a) State the meaning of empirical formula.
Nyatakan maksud formula empirik.
[1 markJ
II markah]
(b) Determine the empirical formula of propene.
Tentukan formula empirik bagi propena.
z(cl
[3 marksJ
[3 markah]
(c) The relative molecular mass of propene is 42. Determine the molecular mass ofpropene.
Jisim molekul relatif bagi propena ialah 42. Tentukan formula molekul bagi propena.
[2 marks]
[2 markah]
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(d) The combustion of propene in excess oxygen yields carbon dioxide and water.--Pemdadafan prop€na dafam oreiry beiiflebihan menghasilkan karbon doksida danair.
(i) Write a balanced chemical equation for the combustion of propene in excess
-*---gxygenlo-plod-rree-c*arlgn-dioxideandrv-atej,-_____:___Tulis persamaan kimia yang seimbang bagi pembakaran propena dalamoksigen berlebihan untuk menghasilkan kabon dioksida danair
[2 marksJ
[2 markah]
Calculate the minimum volume of oxygen gas required for the combustiori of0.4 mole of propene at room temperature.
Hitung isi padu minimum gas oksigen yang diperlukan untuk pembakaran 0.4mol propena pada suhu bilik. ,
(ii)
2(dxii)
[2 maksJ
{2 mTkahl
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3. Diagram 3 shows the formation of zinc nitrate and its conversion to several othersubstances.
Raiah 3 menuniukkan pembentukkan zink nitrat dan pertukarannya kepada beberapabahan yang lain.
Dilute nitric acid
- Asid nitrik cair -
Grey solid P
Pepejal kelabu P
Zinc nitrate
Zink nitratA colourless gas Q
Gas Q tak berwarna+
3(a)(i)
Sodium carbonate solution
Larutan natriu m karbonat
S and sodium nitrateS dan natrium nitrat
Diagram 3
Rajq[ 3
Substance P is a grey solid that reacts with dilute nitric acid to produce zinc
nitrate Narne subslance P-.
Bahan P ialah pepejal kelabu yang bertindak balas dengan asid nitrik cairuntuk menghasilkan zink nitrat. Namakan bahan P,
[1 mark]
[1 markah]
(ii) Write a balanced chemical equation for the reaction between substance P and
dilute nitric acid.. Tulis peisamaan kimia yang seimbang untuk tindak balas antara bahan P
dengan asid nitrik cair.
[2 marks]
[2 markah]
Aqueous ammoniaAmmonia akues
Compound R
Sebatian R
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(b) lt 25 cm3 of 2 mol dm€ nitric acid reacts with excess P, calculate the volume ofcolouiiAss gas iliHeasedef room Tonditii?n.
Jika 25 cms asid nitrik 2 mol d*'3 bertindak balas dengan P yang bertebihan, kiraisipadu gas tak berwarna yang dibebaskan pada keadaan bitik.
IMOEi VOEme at room conditiOn j 24-dm3 per mcill
[ lgipaQu molay pada.keqdaan bltiK=
Za dmt_ per mo-t ]
[2 markl
[2 markah]
(c) Aqueous ammonia is added drop by drop into a test tube containing 2 cm3 of zinc
nitrate until in excess. What is your observation?-A,mrh1niaaKnes ditambahkai titis demi titii ke dalam tabting Aji yang rnengandungi
2 cms zink nitrat sehingEa berlebihan. Apakah pemerhatianZnAil
[2 marks]
[2 markah]
(d) When zinc nitrate is mixed with sodium carbonate solution in a beaker, substance S
and sodium nitrate are formed.Apabila zink nitrat ditambahkan kepada larutan natrium karbonat datam sebuahbikar, bahan S dan natrium nitrat terbentuk.
,1
0 State the type of reaction involved.
Nyalakan jenis tindak balas yang terlibat.
[1 mak]
[1 markah]
3(b)
3(dxi)
.tI
I
:
I
,
(ii) Write the-ionic equation to show the Jormation of substance S
Tulis persamaan ion untuk menunjukkan pembentukan bahan S.-- 3(dxii)--
j
[1 mark]
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3(dxiii)
,i
(ii) How can you separate-substance S from sodium nitrate solution?Bagaimana anda dapat mengasingkan bahan S daripada larutan natriumnitrat?
[1 mark]
II rnaikiIfrJ
(a) Diagrams 4 shows how ammonium sulphate is produced.
Rajah 4 menunjukkan bagaimana ammonium sulfat dihasilkan.
(i)
Diagram 4
Rajah 4
Substance P and Substance Q are products that are produced from ContactProcess and Haber Process respectively.
Name Substance P and Substance Q.
Bahan P dan Bahan Q adalah hasil-hasil yang terbentuk masing-masingdaripada Proses Sentuh dan Proses Haber.
Namakan Bahan P dan Bahan Q.
Substance P:
Bahan P :
Reaction R
Tindak balas R
Ammonium sulphate
Ammonium sulfat --
Substance Q:
Bahan Q:
[2 marks]
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_(i:l
Y,ii::,T.::3x*"irff1l ::,H':li';::i:;::: 1,",a c Fta t,avatqa, Fvalsaaa6qaa la.aaaag gJaaaagqaav uuv, aaaaggat gutgv I a.
4(aXii)
[2 marks]
[2 markah]
(iii) State one use of ammonium sulphate.
Nyahkeh Sat[ keginaai'dmmd;rtium i!lfa{. -*
[1 mark]
11 markahl
Steel and duratumin are examples of altoys. Steel, which is.composed of iron and
another element, is harder than pure iron.
Keluli dan duralumin ialah beberapa contoh aloi. Keluli, yang terdiri daripada besi
dan satu unsur lain, adalah lebih keras dartpada besi tulen.
(i) Name the other element that is added to iron to form steel
Namakan unsur lain yang ditambahkan kepada besi untuk membentuk keluli.
[1 mark]
[1 markah]
(ii) _ D_rew-th9_arralgq['9d _oj-the_partj-c]9sj11 pu-{_e_ ire_n and in stee-!,--
Lukis susunan zarah dalam besi tulen dan dalam keluli.
- a(axiii)
(b)
4(bxi)
Pure iron
Besi tulen
Steel
Keluli
4(bxii)
[2 marks]
[2 markahJ
(iii)
4(bxiii);
[2 marks]
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10
5. An exoeriment is carried out to determine the rate of reaction between excess calcium
carbonate and 50.Ocm! of 02 mot drne hydroch{oric aoid'The'r,olume of carbcn diexlde-- --- --gas produced is recorded at 30 seconds intervals. The result obtained is recorded in
Table 5.
Satu ekpeimen telah dijalankan untuk menentukan kdar tindak balas.antara SO.Obttf
asid hidroklorik 0.2 mol dnf dengan klsium karbonat betebihan. lsipadu gas krbon-dio4Sfda'fenQ1etb6ffi5-dire'kad4dnTedasetiaBS0'saafdatam-Jad0al5:
5(a)
Time/s
fu!asals0 30 60 90 120 150 180 210 240
Vo!ume/cmgtsipadulcmg
0 17 29 34 36 36 36 36 36
Table 5
Jadual 5
(a) Calculate the average rate of reaction for this experiment.
Hitungkan kadar tindak balas purata bagi tindak balas ini.
5(b)
[1 mark]
[1 markah]
(b) . Based on Table 5, draw a graph of volume of carbon dioxide gas against time.' Berdasarkan Jadual 5, lukis graf isipadu gas karbon dioksida melawan masa.
[3 marks]
[3 markah]
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1a
- 'r-
(c) lf the experiment is repeated by using 50.0 cm of 0.1 mol dm hydrochloric
acid, sketch the expected curve in graph (b). s -s
Jika eksperimen diulangi menggunakan 50.0 cm asid hidroklorik 0.1 mol dfit ,
la,karkan lengkung yang dijangkakan dalam graf (b).
[2 marksJ
[2 merkdtf]-
(d) The factor that affects the rate of reaction in this experiment is concentration.
State two other faciors that can atfect the rate of reaction ih this experiment.
Faktor yang mempengaruhi kadar tindak balas dalam eksperimen ini ialah
kepekatan. Nyatakan dua lagi faktor yang dapat mempengaruhi kadar tindak balasekspeimen ini.
[2 marks]
[2 rnarkah]
(e) Calculate the rate of reaction at 60s for this experiment.
Hitungkan kadar tindak balas pada saat ke 6A bagi tindak balas ini.
5(e)
[2 rnarks]
[2 markah]
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t3
6. (a) Diagram 6 shows an equation representing the reaction between palm oil and-d) R Ce n t raieci p or€Issluin-hydroxi d esoiutio R .
Raiah 6 menuniukkan satu persamaan yang mewakiti tindak balas antara minyakkelapa sawit dan larutan kalium hidroksida pekat.
rl
'l
l---
I
IHI
ut.lt,,t
lmI u,r,,,,,
. _ ::_-, ::-CIir,,l, 6_ C : (CHr)ro : CHg
IloIlllcH-o-c-(cFtrho-cFtg
oil
+3KOH 3CH3{CHr),r-C-O-K
Soap
Sabur'1
Diagram 6
Rajah 6
+ Substance X
Bahan X
Based on diagram 6, answer _the following questions: _ _
Berdasarkan rajah 6, jawab soalan-soalan berikut
(i) Name the soap molecule produced and substance X.
Namakan molekul sabun dan bahan-X-yang terhasil,--
....)t. .....r ...........
[2 rnarks]
[2 markah](ii) Name the process represented by the equation above.
Namakan proses yang diwakilioleh
p€tsdntsndi atas.
,,, tl markl
[1 markah]
(iii) Sodium chloride solid is added to the soap mixture to complete this process.
Explain why.
Pepejal natrium klorida ditambah kepada campuran sabun untuk
melengkapkan proses ini. Terangkan mengapa.
ft markahl
oII
cHz - o - c - (cl.lr)il - ctts
Glyceryl tripalmitate
Gliseril tripalmitat
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-
t4
(iv) Why are the soap molecules not effective in hard water?
fliengapakah molekul sabun iidak ber4esan da;,lam air iiai?
a aa a a a a a a t a a a a . a a a a a a a a a. a a a a a a a a a a a a a a a a a
;,;;;;.;;;;-,;",orr,ooadditivesused;,;;,;;Jadual 6.1 menunjukkan 2 jenis bahan tambah malanan dalam industri makanan
Types of foodadditives
Jenis bahan tambah
makanan
Exarnple
Contoh
Uses
Kegunaan
TMonosodium glutamate (MSG)
Monoinatrium glutamate M SG)
Enhance the flavour of the food
Me ninqkatkan rasa makanan
Thickening agent
Aaen pemekatU Thicken the food
Memekatkan makanan
Table 6.1
Jadual 6.1www. myschoolchildren.com
State the type of food additive T and the example of thickening agent U.Nyatakan-jeiniii Sahaitam1alh maRa,nan T da,i sAtu Coi;iioh ageii psmtekaift U.
- 12 marksl-
[2 markah]
(c) Table 6.2 shows the functions of two types of medicine.
Jadual 6.2 menunjukkan fungsi dua jenis ubat moden,
Type of medicine
Jenis tu,bat
Function
Fungsi
X:
Used to treat infection caused by
bacteria
Digu nakan u ntu k-m erawat jangkitan
vang disebabkan bakteria
Y:
Used to treat mental illness
Digunakan untuk merawat sakit mental
Table 6.2
Jadual.6.2 .
-*Complete Table 6,2 to show which medicines have tfie functions given in thetable;---
Lengkapkan Jadual 6.2 untuk menunjukkan ubat yang mempunyai fungsi yang
dinyatakan dalam iadual ini.
[2 marks]
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t5
Section B..P,ah,aaian,El
uqa aalv,ala a ut
[20 marks ]
[ 20 markah ]
Ari-Swei'-any-o-Requ-eslidri-f r6mthis--SEeti6R.--
7. Diagram 7 shows the chemical symbols which represent three elements V, W and y.Raiah 7 menunjukkan simbol yang mewakiti tiga unsur iaitu V, W dan y.
ElementUnsur
Proton numberNombor proton Nucleon number
Nornbor nukleonV 17 35
W 12 24
Y 17 37
Diagram 7
Rajah 7
ol
(a) Which elements are isotopes? Explain why.
unsur-unsur yang manakah adalah isotop? Terangkan mengapa.
[2 marks]
[2 markah]
(b) Explain the position of element V in the Periodic,Table of Etements.Terangkan kedudukan unsur V di dalam Jadudt Berkala lJnsur
[4 marks]
[4 markah]
(c) Name the type of compound formed when element W reacts with element Y.
State two physical properties of the compound formed.
Namakan ienis sebatian yang terbentuk apabila,ynsur W bertindak balas denganunsur Y. Nyatakan dua sifat fizik bagi sebatian yang terbentuk itu.
[3 marks]
. [3 markah]
(d) (i) Element V and W will react to form a compound.
Write the chemical equation for the reaction between elements V and W.
ElegenV-denW_AKanbefrnlAtbates_anLa|fi emb_e11tatsatu_ssbetiari
Tuliskan persamaan kimia bagi tindakbalas antara unsur V dan unsur W.
(ii) Explain how the bond in the compound is formed.
Terangkan bagaimana ikatan di dalam sebatian itu terbentuk.
[10 marks]flft markahl
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16
(a) Acids are widely used in daily life. Vinegar which is used in cooking is an acid.
digunakan dalam
[3 mafts]
[3 markah]-'[hereare-two types.of acids with the same -concentratio
Terdapat dua jenis asid dengan kepekatan yang sama.
Type of acid
Jenis asidConcentration
KepekatanpH valueNilai pll
Ethanoic acid
Asid ethanoik0.1 mol dm'3 3.0
Nitric acid
Asid nitrik0.1 mol dm'3 1.0
Explain why the pH values of these two acids are ditferent.
TeranEkan mengapa nilai pH bagi kedua-dua asid adalah berbeza.
[4 marks]
[4 markah]
The two solutions are tested with a dry red litmus paper and the results are tabulatedbelow:
Dua larutan diuji dengan kerlas litmus merah kering dan hasilnya dijadualkan di
SolutionLarutan
ObservationF-emerhatian_
Ammonia in chloroform
Ammonia dalam kloroform
No change in colourTiada perubahan warna
Ammonia in water
Ammonia dalam airRed litmus paper turns blue
Kertas litmus merah bertukar biru
Explain why only the ammonia solution turns red litmus paper blue.
Terangkan mengapa hanya larutan ammonia sahaja yang menukarkan kertas litmusmerah kepada biru.
[5 marksJ
[5 markah]
(d) (i) What is meant by standard standard solution?
Apakah yang dimaksudkan dengan larutan piawai?
[1 mark]
[1 markah]
---(iil-Dedcrib-i, how to prepare zso crn%f 1.-0 mol dnt'' poia$ium htaroxioe siarting
Jrom solid potassium hydroxide...
Terangkan bagaimhna untuk menyediat<an 250 cnf tarutan katium hidrolaida
1.0 mol dm3 bennula daipada pepejal kalium hidmksida.
[7 marksl'[7
markah]
Describe acid in term of its characteristies.
Asid banyak digunakan dalam kehidupan seharian. Cuka yangmasakan ialah suatu asid. Jelaskan asid dari segi ciri-cirinya..
(c)
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t7
Section C"-Earhagian C
[ 20 marks ]
[20 markah ]
Ansu/6f dnyinE q[eSti6n fr6m this-SEGi6n:
Jawab mefia,ffi&na satu soalaa daripada bahagian ini
9. (a) Metal J is placed above iron in the electrochemicat series.Logam J terletak di atas ferum dalam siri eledrokimia.
Diagram 9 shows the apparatus set-up of a chemical cell in a school laboratoryRaiah I menunjukkan susunan radas bagi sel kimia di datam makmal sekolah.
Diagram 9
Rajah 9
(i) Label Diagram I with the electi'odes given'6nd ccri'ect solutions. Shclv also thedirection of electron flow.
Label Raiah I dengan elektrod-elektrod yang diberikan dan larutan yang betut.Tunjukkan juga arah aliran electron.
[ 4 marks ]
[ 4 markah ]
(ii) _ Wrlte the half equation for: the positive lerminal.Tutis setengaft persamaan bagi terminal positif.
[ 2 marks ]
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18
)
(iii) Which electrode is the negative terminal and what is your observation at thenegative terminal? Explain your answer.
Eledrod manakah ialah terminal neEatif dan apakah pemerhatian anda padaterminal negatif? Terangkan jawapan kamu
[4 marks ]
UserL&]
(b) Rosni wants to make her iron ring more attractive with silver.
Plan one laboratory experiment to elec{roplate Rosni's ring.
Rosni ingin menbuat cincin besinya kelihatan lebih menarik dengan perakRancang satu eksperimen di dalam makmal untuk menyadur cincin Rosni.
Your answer should include the following:
Jawapan kamu perlu mengandungi perkara berikut:
o List of materials and apparatus
Senarai bahan dan radas
. Procedure of the experiment
lrosedurekspeimel
o Labelled diagram showing set-up of apparatus
Gambarajah berlabet yang menunjukan susunan radas
. Half equations for the reactions at the anode and cathode.
Setengah persamaan bagi tindak balas di anod dan katod.
[ 10 marks ]
[ 10 markah ]
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t9
10 (a) (i) Hexane and hexene are hydrocarbon compounds from different hornologousseries. Thecombustiondthese iwo compounds produces
differeni amolunt of:9o1. Explain the difference based on the percentage of carbon by mass.
[Belative atomic mass: C, 12; H, 1]
12; H,tl
[4 marks ]
[ 4 markah ]
(ii) Hexene can be changed to hexane through hydrogenation process.Write the chemical equation and state the conditions'needed for the process totake place.
Heksena boleh berubah menjadi heksana melalui proses penghidrogenan.Tulis persamaan kimia dan nyatakan keadaan yang diperlukan untukberlakunya proses tersebut.
[ 3 marks ]
[ 3 markah ]
(iii) Table 10 shows the results of a chemical test to differentiate between hexaneand hexene.
Jadual 10 menunjukkan keputusan ujian kimia untuk membezakan antaraheksana dan heksena.
Frocedure
Prosedur
Obseruatlon
Pemerhafian
Bromine water isadded to hexane
Air bromin ditambah kepada heksanaBrown bromine water is decolourisedWarna perang air bromrin ditunturkan
Bromine water is added to hexene
Air bromin ditambah kepada heksena
Brown brpmine water remains unchanged
Warna perang air bromin tidak berubah
Table 10
Jadual l0
{3 marks l-Terangkan mengapa terdapat perbezaan dalam pemerhatian itu.
[ 3 markah ]a
i
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20
(b) A student intends to prepare an ester fromthe reaction between a named alcohol
and a named carboxYlie acid.
Describe a laboratory experiment to prepare the ester.
Seorang pelajar berhasnt menyediakan sejenis ester daipada tindak balas antdra
sejenis alrchol dan asid karboksilik yang dinamakan. -
-- f*r1zikan satuckryinen'rnakmaluntuk+nenyediakan esterlere,ebut*---
Jawapan kamu perlu mengandungi perkara berikut:
o List of materials
Senarai bahan
o Procedure of the experiment
Prosedur eksperimen
. Observation and chemical equation
Pemerhatian dan persamaaan kimia
s Name of the ester produced
Nama ester yang dihasilkan.
[ 10 marks ]
[ 10 markah ]
END OF QT'ESTION PAPER
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NAMA
TINGKATAN
i
MAJLIS PENGETUA SEKOLAHCAWANGAN PULAU PINANG
maLnyslA
MODUL LATIHAN BERFOKUS SPM 2013
KIMIAKertas 3
September
1 Yz iam
454113
Satu jam tiga puluh minit
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
1. Tulis nama dan tingkafan anda pada ruang
yang disediakan.
Kertas soalan ini adalah dalam dwibahasa.
Soalan dalam Bahasa lnggeris mendahuluisoalan yang sepadan dalam Bahasa
Melayu.
Calon dibenarkan menjawab keseluruhanatau sebahagian soalan sama ada dalam
Bahasa lnggeris atau Bahasa.Melayu.
Calon dikehendaki membaca maklumatdi halaman B kertas soalan ini.
2.
3.
4.
5.
www. myschoolchildren.com
Keftas soalan ini mengandungi I halaman bercetak
SoalanMarkahpenuh
Markah
diperoleh
1 33
2 17
Jumlah 50
Hakcipta MPSM Pulau Pinang 2013 [Lihat halaman sebelah
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2
Answer all questions
Jawab semua soalan
Diagram 1.1 shows the set-up of apparatus used in an experimentto determine theposition of different metals in the electrochemical series by measuring the voltage ofdifferent pairs of metals.
The experiment is repeated by replacing metal Wwith metals X, Y andZ.The copperelectrode is the positive terminal in all the experiments.
Raiah 1.1 menunjukkan susunan radas yang digunakan dalam satu eksperimenuntuk menentukan kedudukan logam yang berlainan dalam siri etektrokimia denganmengukur voltan pasangan logam yang berlainan.Eksperimen diulang dengan menggantikan logam W dengan logam-logam X, Y dan Z.Elektrod kuprum adalah terminal positif bagi semua eksperimen.
Copper electrode
Elektrod kuprum
Copper electrode
Elektrod kuprum
After 20 minutes
Selepas 20 minit
Electrode W
Elektrod W
Copper(ll) sulphate solutionLarutan kup rum (l l) sulfat
Electrode W
Elektrod W
Copper(ll) sulphate solution
Larutan kuprup(ll) sulfat
j
t
,t
Diagram 1.1
Rajah 1.1
:f,fr;l::il=-€*rE--
-:A/fi:--f :'!f--:_
::afir_-:---4,.*-
_
--Jrra---
-<,r.*_a-_T///n_:x{lfl_:-
444t.)'--
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3
Diagram 1.2 shows the voltmeter readings of all the experiments.Rajah 1.2 menunjukkan bacaan voltmeter bagi semua eksperimen.
Diagram 1.2
Rajah 1.2
(a) Record the voltmeter readings in the spaces provided in Diagram 1.2.Catatkan bacaan voltmeter pada ruang yang disediakan dalam Rajah 1.2.
(b) State one hypothesis based on this experiment.Nyatakan satu hipotesis berdasarkan eksperimen ini.
[3 marks]
W and Cu
W dan Cu
Reading
Bacaan :
X and Cu
X dan Cu
23
Reading :
Bacaan :
Y and Cu
Y dan Cu
Reading :
Bacaan :
Z and Cu
Z dan Cu
Reading :
Bacaan :
1(a)
1(b)
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1(c)
1(d)
4
(c) Construct a table to record the vottmeter reading for the different pairs of metals.Bina satu iadual untuk merekod bacaan vottme{er untuk pasangan logam yangberlainan.
[3 marks]
(d) For this experiment, state:Bagi eksperimen ini, nyatakan:
(i) The manipulated variable
P e mbol e h u bah di m an ipu lasikan
(i i) The responding variablePembolehubah bergerak balas
(iii) The constant variableP embol eh u bah dimalarkan
1(e)
(e)
[3 marks]
State the operational definition for the position of metals in the electrochemicat series.Nyatakan definisi secara operasi bagi kedudukan logam datam siri eteiKrokimia.
[3 marks]
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5
State the obseruations and the inferences that can be made for this experiment after 20minutes.
Nyatakan pemerhatian dan inferens yang dapat dibuat bagi eksperimen' ini setepas 20
minit.
[6 marks]
(g) Based on the voltmeter readings, arrange atl the metals in ascending order of theirelectropositivity.
Berdasarkan bacaan voltmeter, susunkan semua logamdalam susunan menaikkeeleffiropositif an me reka.
[3 marks]
After 20 minutes
Selepas 20 minitObservations
Pemerhatianlnferences
lnferens
At the negative terminalPada terminal negatif
At the positive terminalPada terminal positif
Copper(ll) sulphate solution
Larutan kuprum(l l) sulfat1 (f)
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1(h)
(h)
6
The experiment is repeated by using different pairs of metals as shown'in Table 1"
Predict the positive terminal and the voltage for each pair of metals by completing thetable.
Ekspeririten diulang dengan menggunakan pasangan logam yang berlainan sepertidalam Jadual 1. Ramalkan terminal positif dan voltan bagi setiap pasangan logam
dengan melengkapkan jadual tersebut.
Pair of metals
Pasangan logam
Positive terminal
Terminal positifVoltage / V
Voltan / V
WandX
XandY
WandZ
Table 1
Jadual 1
The following is a list of chemical substances:
Berikut ialah senarai beberapa bahan kimia:
. Sodium chloride solutionLarutan natrium klorida
[6 marks]
Glucose solution
Larutan glukosa
Dilute sulphuric acid
Asid sulfurik cair
. Glacial ethanoic acid
Asid etanoik glasial
Classify these substances into substances that can be made as an electrolyte and
substances that cannot be made as an electrolyte for this experiment.
Kelaskan bahan-bahan ini kepada bahan yang boleh dijadikan sebagai elektrolit dan
bahan yang tidak boleh dijadikan sebagai etektrolit bagi eksperimen ini.
(i)
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2.Sacrificial protection is a technique used to control corrosion of metal suffaceby using a more electropositive metal as the sacrificial metal.
Perlindungan korban merupakan suatu teknik yang digunakan untukmengawal kakisan pada permukaan logam dengan menggunakan suatu
logam yang lebih elektropositif sebagai logam korban.
Diagram 2 shows the zinc plates that are attached to the body of the ship to prevent therusting of iron.
Rajah 2 menunjukkan kepingan-kepingan zink yang dilekatkan pada badan kapal untukmenghalang besi daripada berkarat.
lron ship
Kapal besi
Zinc plate
Kepingan zink
Diagram 2
Rajah 2\
Plan a laboratory experiment to investigate the effect of other metals on the rusting of
iron.
Rancang satu eksperimen makmal untuk mengkaji kesan logam-logam lain terhadap
pengaratan besi.
Your planning should include the following aspects:
Perancangan anda mestilah mengandungi aspek-aspek berikut:
(a) Statement of the problem
Pernyataan masalah
(b) All the variables
Semua pembolehubah
(c) Statement of the hypothesis
Pernyataan hipotesis
(d) List of substances and apparatus
Senarai bahan dan radas
(e) Procedure
Prosedur
(f) Tabulation of data
Penjadualan data
=Dct(D
o€A)
'C,(D
a;
D(D
atir(D
3A)
*l=l=I:Jl<.t<r,l(.'
I=l8l('l3to-l-t(DIPlc)tol3
IEl€t=l=F<tal()t:,lotolc)t3lo-IrD
IPl8l3
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