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8/12/2019 2012 Chemistry Pahang With Answer
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CHEMISTRY
Kertas 1
OKT NOV 20121 }{JAM
PEPERIKSAAN PERCUBAAN SPM TAHUN 2 12
CHEMISTRY
Tingkatan 5
Kertas 1
Satu jam Lima el as in t.
JANGAN BUKA KERTAS SOALAN SEHINGGA DIBERITAHU
INFORMATION FOR CANDIDATESM KW M T UNTUK CALON
1. This question paper consisits of 5 questions .Kertas soalan ini mengandungi 5 soalan
2. Answer all questionsJawab semua soalan.
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3. Each question is followed by four alternative answers A B C or D For each question choose one
Answer only . Blaken your answer on the objective answer sheet provided . Tiap-tiap sao/an diikuti o/eh em p t pilihan jawapan i itu A B C dan D Bagi setiap soalan pilih
atu j w p n sahaja. Hitamkan j w p n and a p d a kertas j w p n objektif yang disediakan.4 If you wish to change your answer erase the blackened mark that you have made . Then blacken
Kertas soa/an ini mengandungi 28 halaman bercetak
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1. Which of the following statement is true regarding chemical?Yang manakah di antara berikut adalah benar merujuk kepada bahan kimia?
A. Each matte r is a chemical.Setiap jirim adalah bahan kimia .
B. Air is not considered a chemical.Udara tidak dianggap bahan kimia .
C. Chemical are only found in laboratories.Bahan kimia hanya dijumpai di dalam makmal.
D. All chemicals are dangerous substances .Semua bahan kimia adalah berbahaya.
2 . Diagram 1 shows the electron arrangement of an atom of element P .Rajah 1 menunjukkan susunan elektron bagi atom unsur P .
iagram 1Rajah 1
What is the number of valence electrons in atom P ?Berapakah bilangan elektron valen bagi atom P
A 78 6c 50 4
3 . The following statements are about atom M and Z . ~ o t a a nberikut adalah mengenai atom M dan Z.
1 ~ . . : . - . : . n ~ :~ . : : .
: ~ - - ~ : ~ Electron arrangement of atom M is 1r ;~ t ~ ~ - ~~ Susunan elektron atom M ialah 1\f c ~ Proton number of atom Z is 6~ ., ) /-j Nombor proton atom Z ialah 6
~ ~ ~ ~.f t / 1. .i f~ _~ o~ ~ ih eformula of the compound formed between M and Z?
~A p a ~ a hformula bagi sebatian yang terbentuk a ntara M dan Z
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4. Table 1 shows the proton number of elements P Q RandS .Jadual 1 menunjukkan nombor proton bagi unsur P Q R dan S.
Element pUnsur
Proton number11
Nombor proton
Q
14
Table 1Jadua 1
R
16
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s
19
What is the arrangement of elements S T U and V in ascending order of atomic size?Apakah susunan saiz atom secara menaik bagi unsur unsur S T U dan V
A P Q R SP S Q R
C S R Q PD R Q P S
5. Table 2 shows the melting and boiling points of substances W X Y and ZJadua/ 2 menunjukkan takat /ebur dan takat didih untuk bahan W X Y dan Z
Substanceahan
wXyz
Melting point I Takat lebur I C
-5948
-110128
Table 2Jadua 2
Boiling point I CTakat didih I C
60130-70470
Which of the following substances has the highest kinetic energy at room temperature?
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Persamaan di atas menunjukkan penguraian garam karbonat bagi logam X apabila
dikenakan tindakan haba. Jika 0 05 mol xo terhasil, hitungkan jisim bagi xco yangterurai .
JAR : C 12; 0 16; X,64).
A 0 08 g
B 1 60 g
c 3 20 9D 6 20 g
10 Aluminium oxide has both acidic and basic properties therefore it is
Aluminium oksida mempunyai kedua-dua sifat asid dam bes oleh itu aluminium oksida
ialah
A. a base oxideoksida bes
B an acid oxideoksida asid
C a metalloid oxideoksida metaloid
D. an amphoter ic oxideoksida amfoterik
11 he diagram 2 shows the electron arrangement of a compound formed between atoms Pand Q
Gambar rajah 2 menunjukkan susunan electron bagi sebatian yang terbentuk antara atom
.P de ngan atom Q
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Diagram 2Rajah
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Which of the following statements is tru about the compound?Antara pemyataan berikut yang manakah benar ten tang sebatian itu
A. It is an ionic compound
Sebatian itu adalah sebatian ionB. The compound is formed by covalent bonds
Sebatian itu terbentuk melalui ikatan kovalen
C. The compound has a high boiling pointSebatian itu mempunyai takat didih yang tinggi
D. The compound is formed by electron transferSebatian itu terbentuk melalui pemindahan elektron
12. A restaurant owner wants to use colourful electric lamps to attract customers.
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Which of the following substances A B C or D in the Periodic Table is suitable to be used
in the lamps?
Seorang pemilik restoran ingin menggunakan fampu efektrik yang berwama warni untuk
menarik perhatian pelanggan.
Antara unsur A 8 C dan D dalam Jaduaf Berka/a berikut yang manakah sesuai
digunakan untuk lampu itu.
A D
B c
The diagram 3 shows the electron shells in the substance formed between atoms of
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Diagram 3Rajah
What is the electron arrangement of atom Y?Apakah susunan elektron bag i atom Y
A 2.4
B 2 .8
C 2 .8.4
D 2.8.8
14 . In Periodic Table each elements in the group have
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Dalam Jadual Berka a unsur-unsur dalam satu kumpulan tertentu mempunyai
simi lar physical characteristicsifat fizik yang sama .
II similar chemical characteristic
sifat kimia yang sama.
Ill equal number of proton in the nucleus of an atombilangan proton yang sama dalam nukleus atomnya.
IV equal number of electron in the outermost shell of an atombi/angan e/ektron yang sama di petala /uar atomnya .
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15 Diagram 4 shows information of element X and element YRajah 4 menunjukkan maklumat bagi unsur X dan unsur Y .
Diagram 4Rajah
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Which of the following electron arrangement for the substances formed when the element
X and element Y react?
Antara berikut yang manakah susunan elektron bagi sebatian yang terbentuk apabila
unsur X dan unsur Y bertindak balas?
A
[ J ~ lB
C
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16 . Which of the following are true about ionic compound?Antara pernyataan berikut. yang manakah benar tentang sebatian ion?
Dissolve in water
Larut dalam air
II Produced from the reaction between metal and non metal elementsTerbentuk daripada tindak balas antara unsur logam dengan unsur bukan /ogam
Ill Formed through transfer of electrons between the atomTerbentuk melalui perpindahan e/ektron antara atom-atom.
IV Conduct an electricity in a solid stateMengalirkan arus elektrik dalam keadaan pepejal
A I and II onlyI dan II sahaja
B Ill and IV onlyIll dan IV sahaja
C I II and Ill onlyI, II dan Ill sahaja
D I II Ill, and IVI II Il l, dan V
17 . Which substances are electrolytes?Bahan-bahan manakah adalah elektrolit?
GlucoseG/ukosa
II AcetamideAsetamida
Ill Lead ll) bromidePlumbum //) bromide
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C. I and IllI dan Ill
D. Ill and IVIll dan IV
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A I and II onlyI dan II sahaja
B II and IV onlyII dan IV sahaja
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C. I and Ill onlyI dan I ll sahaja
D. II Ill dan V sahaja1/ Ill dan IV sahaja
20 . Amni are going to coat an iron key with silver by electrolysis. The anode should
Amni akan menyadur kunci besi dengan perak melalui elektrolisis . nod adalah
A Silver plate C. Iron platePlat perak Plat besi
B. Silver nitrate D. Iron keyArgentum nitrat Kunci besi
21 . Which of the following statements is true about all bases?Manakah antara pernyataan berikut benar tentang semua bes?
A React with acidsBertindak balas dengan asid
B. Dissolves in waterLarut dalam air
C. Contain hydroxide ionsMengandungi ion ion hidroksida
D. Have alkalines propertiesMempunyai sifat alkali
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22. Diagram 6 shows the set up of apparatus used to investigate the ability of various
solutions to conduct electricity.
Rajah 6 menunjukkan susunan radas yang digunakan untuk mengkaji kebolehan
pelbagai larutan untuk mengalirkan arus elektrik.
2012 Hak Cipta MPSM Pah ang
: .
Diagram 6Rajah
BulbMento/
Solution XLarutan X
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The light bulb glowed brightly . The aqueous solution X could beMento/ menyala dengan terang Larutan akues X adalah
A. ethanoic acid C citric acidasid etanoik asid sitrik
B. hydrochloric acid D. tartaric acidasid hidroklorik asid tartarik
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23 . The equation shows the reaction between sulphuric acid and potassium hydroxide .
Persamaan i bawah menunjukkan tindak balas di antara asid sulfurik dan kalium
hidroksida
What is the volume of 0 .2 mol dm3
potassium hydroxide solution which can neutralize
20 .0 cm3
of 0 .1 mol dm3
sulphuric acid?
Berapakah isipadu /arutan kalium hidroksida 0 2 mol dm yang diperlukan untuk
meneutralkan 20. 0 cm 0. 1 mol dm asid sulfurik?
A. 10 .0 cm3 C. 40.0 cm 3
B. 20 .0 cm3
D 80.0 cm3
. The equation shows the reaction between sod ium chloride solution and silver nitrate
solution to produce silver chloride precipita te .
Persamaan menunjukkan tindak balas antara larutan natrium klorida dan larutan
argentum nitrat untuk menghasilkan mendakan argentum klorida
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20 cm o 1 0 mol dm
larutan natrium k/orida bertindak bat as lengkap dengan larutan
argentum nitrat berlebihan Hitungkan jisim mendakan yang terbentuk
[Jisim atom relatif Ag=108; C/=35 5]
A 3.78 g
3.87 g
25 . Which of the following salts is insoluble?Antara berikut yang manakah garam tak terlarut?
A Barium sulphateBarium su/fat
B Potassium carbonateKalium karbonat
c Silver nitrateArgentum nitrat
D Ammonium carbonateAmmonium karbonat
cD
2.78 g
2.86 g
26 . Diagram 7 shows the set-up of apparatus to prepare a sulphate sal t using the
precipitation reaction.
Rajah 7 menunjukkan susunan radas dalam penyediaan garam sulfat denganmenggunakan tindak balas pemendakan
Solution ~Larutan X .-
. I
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StirKacau
Diagram 7Rajah
PrecipitateMendakan
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Solution X isLarutan X adalah
hydrochloric acid Ill lead ll) nitrateasid hidroklorik plumbum nitrat
II barium chlo ride IV calcium chloridebarium klorida kalsium klorida
A I and IV only c II, Ill and IV onlyI dan V sahaja II, Ill dan V sahaja
I II and I ll only D I II, Ill and IVI II dan Il l sahaja I II Ill dan V
27 . The following information shows the properties of salt X.Maklumat berikut menunjukkan sifat-sifat garam X
Releases brown gas and a gas which lights up glowing splinter
when heated strongly .
Membebaskan gas perang dan gas yang menyalakan kayu uji
berbara apabila dipanaskan dengan kuat.
Residue after heating is brown when it is hot and yellow when it iscold .
Menghasilkan baki yang berwarna perang semasa panas dan
kuning semasf3 sejuk
C . Lead ll) nitratePlumbum //) nitrat
D. Lead ll) carbonatePlumbum //) karbonat
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28 Diagram 8 shows tests performed on compound G .Rajah 8 menunjukkan ujian yang dijalankan ke atas sebatian G.
l G IAdded with dilute hydrochloric acid andfiltered
kd nambah dengan asid hidrokloridituraskan
Precipitation SolutionMendakan Larutan
Added w th ammonia solutionessntil exc
Tambah larutan ammoniaanerlebih
White precipitatedissolve
Mendakan putih
Diagram 8Rajah
a rut
G is a mixture of two types of salts. Which of the following is found in G?G ialah campuran dua jenis garam . Antara berikut manakah terdapat dalam G?
A Silver sulphate and copper ll) carbonateArgentum sulfat dan kuprum /1) karbonat
B Lead ll) nitrate and zinc carbonatePlumbum //) nitrat dan zink karbonat
C Lead ll) nitrate and aluminium nitratePlumbum //) nitrat dan aluminium nitrat
g n e s i u msulphate and lead ll) carbonate~ J t } a gn e s i u msulfat dan plumbum //) karbonat1 _
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29 What is the type of glass used to make glass containers?Apakah jenis kaca yang digunakan untuk menghasilkan bekas kaca?
A Borosilicate glassKaca borosilikat
B Soda lime glassKaca soda kapur
C Fused glassKaca silica terfakur
D Lead crystal glassKaca plumbum
30 Statues or monuments are made of bronze What is the main metal in bronze?Patung atau tugu dibuat daripada gangsa Apakah logam utama dalam gangsa?
A IronBesi
B AluminiumAluminium
C MagnesiumMagnesium
D CopperKuprum
31 The following equation represents the reaction between calcium carbonate and
hydrochloric acid
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P n berikut mewakili tindak balas antara kasium karbonat dan asid hidroklorik
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A Decrease the size of calcium carbonateMengurangkan saiz kalsium karbonat
8 Increase the temperature of the mixtureMeningkatkan suhu campuran
C Increase the volume of hydrochloric acidMeningkatkan isipadu asid hidroklorik
D Increase the concentration of hydrochloric acidMeningkatkan kepekatan asid hidroklorik
3 . Which of the following is a role of catalyst to increase the rate of reaction?
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Antara berikut yang manakah adalah peranan yang dimainkan oleh mangkin dalam
meningkatkan kadar tindak balas?
A It increase the kinetic energy of reacting particleIa boleh meningkatkan tenaga kinetik zarah bahan tindak balas
8 It lowers the activation energy in the reactionIa merendahkan tenaga pengaktifan di dalam tindak balas
C It decrease the number of collision per second in the reactionIa mengurangkan jumlah perlanggaran per saat di dalam tindak balas
D It increase the surface area of the reacting particleIa merendahkan luas permukaan zarah bahan tindak balas
33 . Diagram 9 shows the apparatus for an experiment to determine the rate of reaction
between sodium thiosulphate solution and sulphuric acid.
Rajah 9 menunjukkan susunan radas bagi eksperimen untuk menentukan kadar tindak
balas antara larutan natrium tiosulfat dan asid sulfurik.
~
{ mark,, Tanda
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Diagram 9Rajah
Sodium thiosulphatesolution sulphuric acidNatrium tiosulfat asid
sulfurik
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Which o the following combination o conditions will make the mark X to disappear the
fastest?
Antara kombinasi keadaan berikut yang manakah mengambil masa yang paling singkatuntuk tanda X hilang daripada penglihatan?
ABcD
Sulphuric acidAsid sulfurikVolumelsipadulcm
10101010
ConcentrationKepekatanlmoldm
1.01.01.01.0
Sodium thiosulphate solutionLarutan natrium tiosulfatVolume Concentrationlsipadu m
Kepekatanlmo dm
50 0.550 0.550 1.050 1.0
34 Diagram 10 shows an energy level for the reaction X + Y 7 Z
Rajah 10 menunjukkan aras tenaga untuk tindak balas X + Y 7 Z
EnergyTenaga
Diagram 10Rajah 10
c
D
130 kjmol 1
830 kjmol1
TemperatureSuhu I C
30405030
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35 Table 3 shows the total volume of gas collected at regular interval in a reaction.
Jadual 3 menunjukkan jumlah isipadu gas terkumpul pada seta masa tertentu .
Time,s0 30Masa,s
Volume of gas,cm 3 0 2 0lsipadu gas cm 3
What is the average rate of reaction?
Berapakah kadar tindak balas purata?
A
B
60 90
3.7 5 2
Table 3Jadua 3
c
D
120 150 180
6 4 7 .3 8 6
36 Which of the following pairs of compounds are in the same homologous series?
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210
8 6
Manakah antara pasangan sebatian berikut berada dalam siri homolog yang sama?
Compound 1 Compound 2
Sebatian 1 Sebatian 2
A c2H4
c3 H sB C2 Hs c3 H s
c C2 Hs OH CH3C 2HD C2HsOH C2 Hs COOH
37. The following equation represents a reaction for industrial preparation of Propanol.
n berikut mewakili tindak balas penyediaan etanol secara industri. .: . )~ ~ \ .
~ ~ .
P H2 CH3 CH2 CH2 OHCatalyst X 30CfC/60atm
[ mangkin X 30CfC I 60 atm]
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What is P and catalyst X?Apakah P dan mangkin X?
A
B
c
D
p
C2H4
C3Hs
C2H4
C3Hs
2
Catalyst XMangk nX
Platinumplatinum
Nickelnikel
Nickelnikel
Phosphoric acidAsid fosforik
38 Diagram 11 shows the formation of vulcanized rubber from natural rubber .
Rajah 11 menunjukkan pembentukan getah tervulkan daripada getah asli.
C ~ c VulcanizationPemvu/kanan
DiagramRajah
Which of the following statement is true about the above diagram .
nt ra penyataan berikut yang manakah benar mengenai rajah di atas.
A Substance Y is disulphur dichloride solutionBahan Y adalah larutan disulfur diklorida
' B. . f . _ f \V U I C a n i z e drubber is less easily OXidized
, eia h tidak tervulkan tidak mudah dioksidakanr l ~ , ~ ~ f . '
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~ C 0 _ V ul~~ n i z e drubber becomes soft and sticky easily in organic solvent.f ~ ~ ~ _ l.~ tervulkan mudah menjadi lembut dan me/ekit dalam pe/arut organik.
< : s ~ b s t a n c eY is hydrogen sulphide acid ~ . Bahan Y adalah asid hidrogen su/fida .
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39. Diagram 12 below shows the structural formula of an ester molecule
Rajah 12 di bawah menunjukkan formula struktur bagi suatu molekul ester.
0
tCH3 C H 2 C 0 C H 1
Diagram 2Rajah 2
Which of the following reactants is used to prepare the above ester
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Antara yang berikut manakah bahan tindak yang digunakan untuk menyediakan ester
seperti di atas
A Propanoic acid and methanol
Asid propanoik dan metana/
8 Methanoic acid and propanol
Asid metanoik dan propanol
C Ethanoic acid and ethanol
Asid etanoik dan etanol
D Butanoic acid and methanol
Asid butanoik dan metanol
40. Which of the following equations represent a redox reaction?
Antara persamaan berikut manakah mewakili tindak balas redoks?
CuO + H2S04 --- CuS04 + H20
II 2HCI + Zn --- ZnCb + H2
Ill Ag + r --- AgCI
2CI-+S
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41 . Diagram 13 shows the apparatus arrangement to investigate the oxidation and reduction
in terms of the transfer of electrons at a distance.
Rajah 13 menunjukkan susunan radas bagi mengkaji pengoksidaan dan
penurunan berdasarkan pemindahan elektron pada satu jarak.
Iron II) sulphateFerum II) sulfat
Diagram 13
Rajah 3
Acidified PotassiumManganate VII) solution
Kalium mangganat V/1)berasid
Dilute sulphuric acid- - - - - - -Asid sulfuric cair
Which of the following statement is true about the reaction occurs.
Antara berikut pernyataan manakah adalah benar tentang tindak balas yang berlaku.
A lron ll) ion, Fe + is reduced
Jon Ferum /1) mengalami penurunan Fe +
. B Electrons flow from electrode P to Q
Efektron mengalir dari efektrod P ke Q
C The purple colour of solution becomes green
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4 . Diagram 14 below shows the mechanism of rusting.
Rajah 14 di bawah menunjukkan mekanisma pengaratan
Water dropletTitisan ir
Diagram 14
Rajah 4
Which of the following equation occurs at the anode?
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Antara pemyataan berikut yang manakah menunjukkan persamaan yang berlaku di
nod?
A Fe ~ 2e
B 02 2H20 4e 40H-
C 40H- 02 2H20 4e
D Fe2
2e Fe
43 . .Tabl e 4 below shows the results of an experiment to investigate the effect of metals on
the rusting o iron.
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44 . Diagram 15 below shows the apparatus set up to measure the heat energy given out in
the reaction between magnesium and iron sulphate solution. The experiment is repeated
by using zinc and iron sulphate solution.
Rajah 15 di bawah menunjukkan susunan radas untuk mengukur tenaga haba yang
dibebaskan di dalam tindak balas antara magnesium dan larutan besi sulfat. Eksperimen
ini diulang dengan menggunakan zink dan larutan besi sulfat.
agnesium p o w e r ~Serbuk magnesium \ \, I Plastic cup
I l
Cawan plastik
Iron II) sulphate solutionLarutan besi II) su fat
Diagram 5Rajah 5
Which of the following has to be constant for the reaction?
Antara yang berikut, manakah yang perlu dikekalkan dalam tindak balas ini?
A The size of the spatulaSaiz spatula
B The position of the thermometerKedudukan termometer
C The volume of the iron ll) sulphate solutionlsi padu larutan ferum /1) sulfat
fl .
: ;~ t i m etaken to read the temperature of the mixture~ i f t J 1o masa membaca suhu campuran. ;s:; . )
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47 . An acid HX and an alkali YOH, both with the same concentration, are mixed in different
volume ratios as shown in the table below. Which of the following sets of mixture will
produce the highest rise in temperature?
Satu asid X dan satu alkali YOH yang mempunyai kepekatan yang sama dicampurkanpada nisbah isipadu seperti yang ditunjukkan pada jadual di bawah Antara larutan set
berikut yang manakah akan menghasilkan kenaikan suhu yang paling besar?
Vblume o X ~ ~ - V o l m~ of YO I f{ 3 . ' ,-
-. ~ S . i p a d uvoH cm 3J/sipadu H> cm 3 / ~ 0 . . . _ ~- ~ ~U ~ [ Pk menentusahkan kation dan anion dalam sebatian tersebut.*-':: Oo ; , ~ _
-~ ; ; ; :- ' [5 marks][5 markah]
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8. Diagram 8 shows the set-up of the apparatus to study the heat of displacement .
Rajah 8 menunjukkan susunan radas bagi mengkaji haba penyesaran.
Beaker that contain
2 g zinc powder f . : :(excess)
Bikar yang mengandungi 2gserbuk zink berlebihan)
n ThermometerTermometer
I Polystyrene cupCawan polistren
50.0 cm3
copper(ll) sulphate= ~ ~ ~ ~ ~ ~ ~ J { ~ ~ Jsolution 0.1 mol dm
3
50 .0 cm /arutan kuprum II)sulfat 0. 1 mo dm
Diagram 8Rajah
The following data was obtained in table 8 :
Data yang berikut te/ah dipero/ehi di dalam jadua/ 8 :
Initial temperature of copper(ll) sulphate solution
Suhu awa/larutan kuprum{/1) sulfat
The highest temperature of the mixture
Suhu tertinggi campuran
TableJadua 8
@ 2012 Hak Cipta MPSM Pahang 18
29.0
34 .0
[3 marks]
[3 markah)
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b) i) Write an ionic equation for the displacement reaction above.
Tuliskan persamaan ion bagi tindak balas penyesaran di a las .
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[2 marks]{2 markah]
ii) Calculate the heat of displacement for this experiment if excess zink powder
is added to 50cm 3 copper ll) sulphate solution 0 .1 mol dm -3
[Specific heat capacity of solution= 4 .2 Jg- 1C .,Density of solution=1.0 gcm-3]
Hitungkan haba penyesaran bagi eksperimen ini jika serbuk zink ditambah
secara berlebihan kepada 50 cm3
larutan kuprum /1) sulfat 0. 1 mol dm 3
{Muatan haba tentu larutan =4.2 Jg 1C . Ketumpatan /arutan = 1.0gcm- 3)[4 marks]
[4 markah]
iv) Why is the value of heat of displacement obtained in the experiment is less than
the theorical value?
State two precautions that should be taken during the experiment.
Mengapakah nilai haba penyesaran yang diperoleh dalam eksperimen ini adalah
kurang daripada nilai teori?
Nyatakan du langkah berjaga-jaga yang perlu diambil ketika menjalankan
eksperimen ini .
[3 marks][3 markah]
v) Predict the value of temperature change when 0.2 mol dm-3 of copper II)sulphate solution is used to replace 0 .1 mol dm -3 of copper II) sulphate solution.Explain your answer .
Rama/kan nilai perubahan suhu apabi/a larutan kuprum II) sulfat 0.2 mo
dm -3 digunakan bagi menggantikan larutan kuprum II) sulfat 0 .1 mol dm -3
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c i) Draw an energy level diagram for the reaction.
Lukiskan gambar rajah aras tenaga bagi tindak balas ini
ii) Explain the diagram based on:
Terangkan gambar rajah tersebut berdasarkan:
Type of reaction.
Jenis tindak balas
Energy content of the reactants and products .
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[3 marks][3 markah}
Kandungan tenaga bagi bahan tindak balas dan hasi/ tindak balas
Formation and breaking down the bond .
Pembentukan dan pemutusan ikatan
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[3 marks][3 markah]
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Section CSahagian C
[20 marks]
{20 markah]
Answer any one question from this sectionJawab mana-mana satu soalan dari bahagian ini
9. (a) Diagram 9 .1 shows the label on a pack of food.
Rajah 9 1 menunjukkan label bagi suatu bungkusan makanan.
YAMMY BAKED BEANS
Ingredients:Beans, sugar, tomato puree, salt and spice, permitted modifiedstarch .
et Weight120 gram
Bahan bahanKacang gula pur i tomato garam dan rempah kanj idiubahsuai
yang dibenarkan.
Diagram 9.1
Rajah 9 1
Beret bersih120 gram
r ; , . ~ .~ ~ = ~ ~ . . . ~5 '"
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- ~ ... \ ;S ta t ~: : t ; w otypes of food additive found on the label and state the function for" "';,\'
12 ~ eac lrtype of food additives.~ ~ ~ - '~ j ~ ~1 - f J k ndua jenis bahan tambah makanan yang terdapat pada label itu dan
~ ( . r ' D o ; , i C : : .V / ak a nfungsi bagi setiap bahan tambah makanan tersebut.~ ~ . Y . , '
@ 2012 Hak Cipta PS Pahang 21
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ii) What are the advantage and disadvantage of using food additives?
Apakah kebaikan dan keburukan menggunakan bahan tambah makanan?.
b) Diagram 9.2 shows the structural formula of a soap.
Rajah 9.2 menunjukkan formula struktur bagi suatu sabun.
[ 2 marks[ 2 markah
CH 3 ,...CH2 ,...CH2 ..CH2 ..CH2 ..CH2 ,...CH2 ..CH 2 ,...CH2Y O - N aCH
2CH
2CH
2CH
2CH
2CH
2CH
2CH
2
art ASahagian
Diagram 9.2Rajah 9.2
0
Ly Jart B
Sahagian S
Name Part A and Part 8 structured. State their properties.Namakan bahagian A dan bahagian B Nyatakan sifat-sifat mereka.
[4 marks{4 markah
c fYta ; . . . 9.3 shows the apparatus set-up to investigate how to remove oily stain fromr ; ~ r~ - a c l ot i {~ observation is made before and after the experiment.
: r c.c '
\ ~tf hl ~~i 3menujukkan susunan radas yang digunakan untuk mengkaji bagaimana~ ~ - - ' i f O r . . i h k nkesan minyak daripada sehelai kain. Pemerhatian dibuat sebelum dan
s ~ f ep a seksperimen .
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Soap
Sabun
Experiment IEksperimen I
Hard waterir fiat
ClothKain
Oily stainKesan minyak
Before experimentSebelum eksperimen
Hard waterir fiat
ClothKain
Hard waterir fiat
ClothKain
Experiment IEksperimen I
Oily stain remainKesan minyak kekal
Oily stain removeKesan minyak
hifang
After experimentSe/epas eksperimen
Diagram 9 3Rajah 9 3
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Detergent
etergen
Experiment IIEkperimen II
Experiment IIEksperimen II
:J. : ' s . i 1~ the observation, compare and explain the effectiveness of the cleansing7::.-..:; ,.ta ction \ e ndetergent and soap in hard water
~~ r r sq pemerhatian,banding dan terangkan keberkesanan tindakan pencucian~ 9 : f ./ "f,i.t
~ R : _ . >"- v~ ; ; - -, ~ r ..... / A ~\ i ~ ~ 0 : ~ ?
'u BelJdWim llr)lbllll
p
I I 1:1.
Na M&Sodba
%J 24
If 7/J ll ::::
K 01 Sc nPOCIIIWID Ctlc:lu:= S
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MAKLUMATUNTUKCALON
1. Kerlas soalan ini mengandungi tiga bahagian: Sahagian A Sahagian S dan
Sahagian C
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2 Jawab semua soalan dalam Sahagian A. Tulis jawapan bagi Sahagian Ada/am ruangyang disediakan dalam kerlas soalan.
3. Jawab satu soa/an daripada Sahagian S dan satu soalan daripada Sahagian C
Tu/iskan jawapan bagi Sahagian B dan Sahagian C pada halaman bergaris dibahagian akhir kerlas soalan ini Jawab Bahagian B dan Bahagian C dengan terperinci .Anda bo /eh menggunakan persamaan gambar rajah jadual gr f dan cara lain yangsesuai untuk menje/askan jawapan anda.
4 Tunjukkan kerja mengira ini membantu anda mendapatkan markah.5 Sekiranya and a hendak membatalkan sesuatu jawapan buat garisan di at as jawapan
itu
6. Rajah yang mengiringi soalan tidak di/ukis mengikut skala kecua/i dinyatakan .7 Markah yang diperuntukkan bagi setiap soa/an atau ceraian soalan ditunjukkan da/am
kurungan.
8. Masa yang dicadangkan untuk menjawab Sahagian A ialah 90 minit Sahagian S ialah30 minit dan Sahagian C ialah 30 minit.
9. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogramkan.
10 . Serahkan semua kertas jawapan and a di akhir peperiksaan .11 . J DU L SERK L UNSUR DISEDI K N Dl H L M N 26
INFORMATION FOR CANDIDATES
1 This question paper consists of three sections: Section A Section S and Section C.2 Answe r all questions in Section A. Write your answers for Section A in the spaces
provided in the question paper.3 Answer one question from Section B and one question from Section C Write your
answers for Section B and Section C in the lined pages at the end of the questionpaper. Answer questions in Section and Section C in detail. You may use equationsdiagrams tables graphs and any other suitable method to explain your answer.
4 Show your working in calculations it may help you to get marks .5 If you Wish to cancel any answer neatly cross out the answer .6 The diagrams in the questions are not drawn to scale unless stated.
7 . Marks allocated for each question or parts there of are shown in brackets.8 s u g g e s t e dto complete Section A is 90 minutes Section S is 30 m inutes and
~ e e i ~ 30 minutes: ,~ -4 .. ..... . '
43/ Y >Umay ~e ~ non-programmable scientific calculator.~~ 0 . H~ ~ in all r ~ u ranswer sheets at the end of the examination .1 _ . THii;filER t tC TABLE OF ELEMENTS IS PROVIDED ON PAGE 26
~ ~ r- V I~ v f i _ . . A < o c - - ~
~ - ~ - - ~
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CHEMISTRYKertas 3OKT 2 12
1 1 2 JAM
NAMA
KELAS
GURU
PEPERIKSAAN PERCUBAAN SPM TAHUN 2012TINGKATAN 5
CHEMISTRYPaper 3
1 hour 30 minutes
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
4541/3
DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SO
1 Tuliskan nama kelas dan nama guru andapada ruangan yang disediakan
2 Kertas soalan ini adalah dalam dwibahasa
3 Soalan di bahagian atas adalah dalamBahasa lnggerls Soalan di dalam tulisancondong adalah dalam Bahasa Melayu yangsepadan
4 Calon dibenarkan menjawab keseluruhan atausebahagian soa an sama ada dalam BahasaMelayu atau Bahasa lnggeris
5 Calon dikehendaki membaca maklumat dihalaman 2
Kod PemeriksaSoalan
1
2
3
JUMLAH
Markah MarkahPenuh Dioeroleh
18
15
17
Kertas soalan ini mengandungi 14 halaman bercetak
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2 4541 3
MAKLUMAT UNTUK CALON
1 Jawab semua soa/an.
2 Jawapan kepada Soalan dan soalan 2 hendaklah ditulis dalam ruangan yangdisediakan dalam kertas soalan.
3 Jawapan kepada Soalan 3 hendaklah ditulis pada he/aian tambahan . Anda bo/ehmenggunakan persamaan gambar rajah jadua/ graf dan cara lain yang sesuai untukmenjelaskan jawapan anda .
4 Tunjukkan kerja mengira ini membantu anda mendapatkan markah.
5 Sekiranya and a hendak membatalkan sesuatu jawapan buat garisan di at as jawapan itu .
6 Rajah yang mengiringi tidak dilukiskan mengikut ska/a kecua/i dinyatakan .
7 Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan di dalamkurungan .
8. Mas a yang dicadangkan menjawab Soa/an 1dan soa/an 2 ialah 45 min t dan Soa/an 3ia/ah 45 minit .
9 Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.
10 Kertas soa/an ini hendaklah diserahkan di akhir peperiksaan.
Pemberian markah :
Markah Penerangan3 Cemerlang : Respons yal} gpaling baik2 Memuaskan : Respons yal} gsederhana1 Lemah: Respons yang kural} g tejl at0 Tiada respons atau res_ _ons salah
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3 454113
INFORMATION FOR CANDIDATES
1 Answer all questions.2 Write your answer for Question 1 and Question 2 in the spaces provided in the question
paper.
3. Write your answers for Question 3 on the extra sheet. You may use equations diagrams tables graphs and other suitable methods to explain your answer .
4 Show your working it may help you to get marks .
5 Ifyou wish to cancel any answer neatly cross out the answer .
6 The diagrams in the questions provided are not drawn to scale unless stated .
7 Marks allocated for each question or part question are shown in brackets .
8. The time suggested to answer Question 1and Question 2 is 45 minutes and Question 3 is45 minutes.
9 You may use a non-programmable scientific calculator .
10. This question paper must be handed in at the end o the examination .
Marks awarded :
Mark Description3 Excellent: The best r ~ o n sprovided2 Satisfactory: An average response provided1 Weak : An inaccurate response provided0 No response or wrong response provided
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1. Table 1 shows the observations in three test tubes used to investigate the effect of other
metals on rusting. A mixture of jelly solution, potassium hexacyanoferrate Ill),
K3Fe CN)e solution and phenolphthalein were used as medium in each test tube . Theobservations were recorded after one week .
Jadual 1 menunjukkan pemerhatian dalam tiga buah tabung uji yang digunakan untuk
menyiasat kesan logam lain ke atas pengaratan. Medium yang digunakan di dalam
setiap tabung uji adalah campuran larutan agar-agar. Larutan kalium
heksasianoferat /11) , K3Fe CN)s dan fenolftalein. Pemerhatian direkod selepas satu
minggu .
Test
tubeTabung
uji
Set -up of apparatus
Susunan radas
Jelly solution +potassiumhexacyanoferrate Ill),K3Fe CN)s solution +
Iron nail phenolphthaleinPaku besi
Copper strip Larutan agar-agar,Kepingan ........,:1\ l >o_larutan kaliumkuprum heksasianoferat Ill) ,
K3Fe CN)6 danfeno/ftalein
Jelly solution +potassiumhexacyanoferrate Ill),K3Fe CN)s solution +phenolphthalein
Larutan agar-agar,larutan kaliumheksasianoferat Ill),K3Fe CN)6 danfenolftalein
Observation
Pemerhatian
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UntukKegunaanPemeriksa
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Ill
\
5
Jelly solution +...-:-::-:- potassium
= ~ r hexacyanoferrate Ill),_ ~ = ~ K3Fe CN)Bsolution +
Iron nail 1; ioii::l[: :: phenolphthaleinPaku besi ~ -
- ~0
Larutan agar-agar,larutan kaliumheksasianoferat Ill),K3Fe CN)6 danfenolftalein
Table
Jadua 1
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UnlukKegunaanPemeriksa
a Complete the observations in the Table 1 above .Lengkapkan pemerhatian dalam Jadual 1 di atas.
[ marks] em3{ markah
b State one inference for each test tubes I II and Ill.Nyatakan s tu inferens untuk setiap tabung uji / II dan Ill .
Test tube 1:Tabung uji 1
Test tube II:Tabung uji II:
t_tube Ill : _ ~ f luji Ill:
_ . : , . ~ v
. ....... ~ : :{ . .. .... ....... 0 0 0 c O -;
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c) State the hypothesis for the experiment.Nyatakan hipotes is bagi eksperimen tersebut
..... ..... ....... . ... .. . ... .. . ........ . ...... . .. ... . .. .. .... .... ..... . .... ......... .. .. .. ... .. ......... ......
. . ... ..... . ... .. . ... ... ... ... ..... .. ...... .. ... .. . .. .... ......... . .. . .... ........ .. ....... ... ... ......
d) For this experiment, stateBagi eksperimen ini nyatakan
i) The manipulated variable:Pembolehubah dimanipu/asi :
[ 3 marks][ 3 markah
. ... . .... ...... . ... ...... .... .. ... ... ....... ...... ...... ... ... ....... .. ..... . ........ .... .... .. .
.... ..... ................... .... ...... ... .. .. . . ..... ..... .. ....... ..... ............ .. ... ..... ... ......
ii) The responding variable :Pembolehubah bergerak balas:
iii) The constant variable :Pembolehubah dima/arkan :
UntukKegunaanPemeriksa
[ 3 marks 1 r =J[ 3 markah Ll2J
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7
e State the operational definition for the rusting of iron nail.Nyatakan definisi secara operasi bagi pengaratan paku besi.
f Diagram 1 shows the apparatus set-up of an experiment.
Rajah 1 menunjukkan susunan radas bagi satu eksperimen.
Jelly solution Larutan agar-agar
+
Potassium hexacyanoferrate Ill), K 3 Fe CN) 6Larutan kalium heksasianoferat (Ill), K Fe(CN)s
+
Phenolphthalein lfenolftalein
Iron nail coiled with lead strip
Paku besi dililit dengan kepingan plumbum
Diagram 1Rajah 1
Predict an observation for the experiment after a week.Ramalkan pemerhatian daripada eksperimen itu selepas satu minggu.
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[ 3 marks 1{ 3 markah
[ 3 marks 1[ 3 markah
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Untukegunaan
Pemeriksa
[ jTotal1
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2. Diagram 2 shows the set up of apparatus to determine the heat of combustion foralcohols .
Rajah 2 menunjukkan susunan radas untuk menentukan haba pembakaran alkohol
Thermometer
Termometer
Wind shieldPenghadang angin
Spirit lamp
Lampu pelita
AlcoholsAlkohol
Diagram 2Rajah
Copper can
Tin kuprum
Waterir
Tripod standTungku kaki tiga
Wooden block
Blok kayu
Three sets o experiments are carried out to determine the heat of combustion odifferent types of alcohols .
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Set
II
9
Initial thermometer readingBacaan awal termometer
5
4
3
1
1
iagram 2 1Rajah 2 1
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Highest thermometer readingBacaan tertinggi termometer
6
s
4
30
2
6
5
4
3
2
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a) Record the initial thermometer readings and highest thermometer readings in Set ISet II and Set Ill at space provided in Diagram 2.1
Rekodkan bacaan awal termometer dan bacaan tertinggi termometer dalam Set /Set II dan Set J 1 pada ruang yang disediakan pada Rajah 2 1
[ 3 marks][ 3 markah]
b) Construct a table to record the initial temperature of water, highest temperature ofwater and increase in temperature in Set I Set II and Set Ill.
Bina satu jadual untuk merekodkan suhu awal air suhu tertinggi dan kenaikan suhudalam Set/, Set II dan Set Ill
3 marks][ 3 markah]
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Table 2 shows the heat o f combustion of four alcohols.Jadual 2 menunjukkan haba pembakaran bagi em pat enis alkohol .
Alcohol
Alkohol
Methanol
Metanol
Ethanol
Etanol
Propanol
Propanol
Butanol
Butanol
Molecular formula
Formula molekul
CH 30 H
C2HsOH
C 3H10H
C4H90H
Table 2
Jadua 2
Heat of combustion KJmor 1
Haba pembakaran KJmof 1
728
- 1376
-2016
2678
c) Sketch a graph to show heat of combustion of alcohols in Table 2 against number ofcarbon atoms per molecule.
Lakar graf untuk menunjukkan haba pembakaran bagi alkohol dalam Jadual 2. me/ a wan atom karbon per molekul.
UntukKegunaanPemeriksa
[ 3 marks ] r =J{ 3 markah] lJ2J
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12
Diagram 2 2 shows the energy level for combustion of ethanol
Rajah 2 2 menunjukkan aras tenaga untuk pembakaran eta no/
EnergyTenaga
.6. H = 726 KJmol 1
Diagram 2 2Rajah 2 2
d) State thr ee informations from Diagram 2 2
Nyatakan tig maklumat berdasarkan Rajah 2 2
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1. .. ..
2 : .. .. .. .. .. ..
3 ...... . ..... ... . ... .................. . ................. . ............ . . ... ... ....... .
UntukKegunaanPemeriksa
[ 3 marks ] \ =J{ 3 markah] L.l.:J
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e) Alcohol isone example of carbon compounds .
Classify the following carbon compounds into hydrocarbons and non-hydrocarbons .
Alkoho/ ada/ah satu contoh sebatian karbon .
Kelaskan sebatian karbon berikut kepada hidrokarbon dan bukan hidrokarbon.
Ethene C2H4
Etena C H4
Methanoic acid, HCOOH
Asid Metanoik HCOOH
@ 2012 Hak Cipta MPSM Pahang
propanol, C3H10H
propanol C3H70H
Prophyl ethanoate CH 3COOC3H7
propil etanoat CH3COOC3H1
[marks]{ markah]
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UntukKegunaanPam eriksa
Tota12
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3
Snail body covered by a cone-shaped shell. What is the chemical compound found in the shells
so hard and waterproof? Actually, the above mentioned shell consists of calcium carbonate,
CaC03 which is insoluble salt.
Badan siput dilindungi oleh cengkerang yang berbentuk kon . Apakah sebatian kimia yang
terdapat pada cengkerang itu supaya keras dan kalis air? Sebenarnya cengkerang terdiri
daripada ka/sium karbonat CaC 3 iaitu garam yang tidak larut .
Referring to the situation above, plan a labarotary experiment to compare the solubility of nitrate
salt , sulphate salt, carbonate salt and chloride salt in water.
Berdasarkan situasi di atas, rancang satu eksperimen untuk membandingkan keterfarutan
garam nitrat garam sulfat garam karbonat dan garam k/orida dalam ai r .
Your planning should include the following aspect:
Perancangan anda hendaklah mengandungi aspek-aspek berikut:
a Problem statementPernyataan masalah
b All the variablesSemua pembolehubah
c HypothesisHipotesis
d List of materials and apparatusSenarai bahan dan radas
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END OF QUESTION PAPERKERT S SO L N T M T
[ 17 marks]{17 markah
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`
SULIT 4541/1/PP 4541/1/PP PERATURAN PERMARKAHAN CHEMISTRY Kertas 1 OKT/NOV 2012
MAJLIS PENGETUA SEKOLAH MALAYSIA NEGERI PAHANG
PERATURAN PERMARKAHAN PEPERIKSAAN PERCUBAAN TAHUN 2012
CHEMISTRY Tingkatan 5
SKEMA KERTAS 1
MAKLUMAT UNTUK PEMERIKSA KERTAS
1. Kertas skema ini mengandungi 50 jawapan untuk soalan objektif. 2. Kertas skema ini adalah sulit sehinggalah tamat peperiksaan percubaan SPM 2012. 3. Terima kasih.
Kertas skema ini mengandungi 2 halaman bercetak
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`
SULIT 4541/1
Marking sheme Chemist ry Paper 1 Form 5
( TRIAL EXAM 2012 @ MPSM Pahang)
2012 Hak Cipta MPSM Pahang [ Lihat halaman sebelah
SULIT
No.Soalan
AnswerNo.
Soalan Answer
No.Soalan
AnswerNo.
Soalan Answer
1 A 14 C 27 C 40 B
2 C 15 C 28 B 41 B
3 D 16 C 29 B 42 A
4 D 17 D 30 D 43 A
5 C 18 C 31 C 44 C
6 C 19 C 32 B 45 C
7 C 20 C 33 C 46 D
8 A 21 B 34 A 47 C
9 D 22 B 35 B 48 D
10 D 23 B 36 A 49 C
11 B 24 D 37 B 50 C
12 D 25 A 38 A
13 A
26C
39 A
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SULIT 1 4541/2/PP
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4541/2/PPPeraturan PermarkahanChemistryKertas 2 Okt/Nov 2012
MPSM PAHANG
PEPERIKSAAN PERCUBAAN SPM TAHUN 2012
TINGKATAN 5
CHEMISTRY
Kertas 2
PERATURAN PEMARKAHAN
_____________________________________________________________________
Kertas skema ini mengandungi 10 halaman bercetak
Amaran
Peraturan pemarkahan in i adalah SULIT.
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SULIT 2 4541/2/PP
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MARKING SCHEME / SKEMA PERMARKAHAN
CHEMISTRY PAPER 2
TRIAL SPM MPSM PAHANG 2012
NO Answers Marks
1.a)
b)(i)
(ii)
c)
d)(i)
(ii)
e)(i)
C 3H6
CnH2n+1 OH
C 3H7OH C 3H6 + H 20
H H H H H H
H- C C- C - H
H C C C -O H
H H H H OH H
Propan-1-ol Propan-2-ol
(any one)
Propane
C3H6 + H 2 C 3H8
-Formula reactant correct
-Formula product correct
Propyl ethanoate
1
1
1
1+1
1
1
1
1
9
2.a)
(i)
(ii)
Number of proton in nucleus of its atom
15
1
1
b) Nucleon number 1
c)(i) Q and R have different number of neutron/nucleon number 1
(ii) Carbon 14 - to estimate the age of fossils and artifactsCobalt 60 - kill cancer cells,sterilised medical instruments
Sodium 24-detect leakage of underground pipes
(any one)
1
d (i)
(ii)
iii)
2.8.7
7
Draw diagram:
1
1
R
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Figure of electron arrangement of R
3 shells
1
1
9
3.a)
( i)
(ii)
(iii)
b)
c)
d)
e)
f)
g)
Z
Q
Y
Q, P, Z, Y, T
4
Z has higher number of protons than T. Hence it has stronger
nuclei attraction on the electrons.
Y3+
Transition Elements
Their ions or compounds are colored//They form complex
ions or compounds/they are good catalysts//They can have
variable oxidation.
1
1
1
1
1
1 + 1
1
1
1
10
4.a)
b.(i)
(ii)
(c)
d)(i)
(ii)
e)
H+ , Cu 2+ ,
SO 42- , OH -
Bubbles of gas released
Concentration of Cu 2+ decrease // Cu 2+
discharge to form Cu atom
Cu 2+ + 2e Cu
Anode become thinner / smaller / mass
decreaseCathode become thicker / bigger / mass
increase
Correct diagram
Copper electrode at anode
Steel spoon at cathode
Copper (II) sulphate as electrolyte
Correct label
1
1
1
1
1
1
1
1
1
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f) Hydroxide ion 1
10
5.a)
b)
c)
d)
e)
f)
g)
Pink to colourless
The point in the titration at which the indicator changes
colour
H2SO 4 + 2NaOH Na 2SO 4 + 2H 2O
Sodium sulphate and water
M1V1 = 1M2V2 2
0.25 V 1 = 10.5 25 2
V1 = 1 0.5 252 0.25
= 25cm 3
50 cm 3
i) Vinegar is used to cure wasp sting that alkaline in nature
ii) Toothpaste contain bases to neutralize acid produce bybacteria
1
1
1+1
1
1
1
1
1
1 + 1
11
6.
a)
b)
c)
d)
Redox reaction is a reaction in which oxidation and reduction
occur at the same time
Oxygen and water
Fe Fe 2+ + 2e
Label of water droplet, oxygen and iron
Label of anode and cathode
Draw arrow from negative to positive pole iron
1
1
1
1
1
1
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e)
f)
Electron transfer form anode to cathode
Oxygen in water gains electrons
Hydroxide ion is form
Using sacrificial metal // sacrificial protection /
By alloying /
By tin platting /
By galvanizing
(Any two)
1
1
1
1+1
117
a)
Correct axis with unit
Correct and Smooth line
Correct scale
1
1
1
0
1
2
3
4
5
6
1 2 3 4 5 6 7
h e i g h t o f p r e c i p i t a t e / c m
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b.
(i)
(ii)
c)
d.(i)
(ii)
iii)
Pb(NO 3)2 + 2KI PbI 2 + 2KNO 3
Volume of Pb(NO 3)2 = 2.5 cm 3
No of mole Plumbum (II) ion = 1 x 0.0025 = 0.0025 mol
No of mole iodide ions = 2 x 0.0025 = 0.005 mol
Pb 2+ +2 I - PbI 2
Correct reactants and products
Balance equation
Salt X = Copper (II) carbonate
Gas Z = Carbon dioxide
Y precipitate = Barium sulphate
CuSO 4 + Ba(NO 3)2 Cu(NO 3)2 + BaSO 4
Correct reactants and products
Balance equation
1. Add sodium hydroxide solution.
2. Blue precipitate formed indicates the presence of Cu + ion.
3. Add hydrochloric acid.
4. Add barium chloride solution.
5. White precipitate formed indicate the presence of SO 42-
ion.
1 + 1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
20
8.a) 1. the mixture becomes hot
2. the thermometer reading increase3. zinc powder dissolves4. brown solid/precipitate formed5. the blue solution turn colourless
(Any three)
1+1+1
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(ii) Exothermic reaction//heat released to the surrounding
Energy content of reactants is higher than energy
content of products
Heat absorbed to break down the bond is lower than
heat released to form a bond
1
1
1
20
9
a.(i)
(ii)
b.
c.
1. Tomato puree is used as a colouring agent to restore the
colour of the food.
2. Sugar // spice is used as a flavouring agent to enhance
the taste of food
3. Permitted modified starch is used as thickener to thicken
food.
(Any two)
Advantage :
i) to prevent food from spoilage
ii) to improve appearance, texture or taste
Disadvantage:
i) Lead to serious diseases like asthma, and cancer
- Part A is hydrophobic: Soluble in oil or grease
- Part B is hydrophilic: Insoluble in oil or grease//soluble in
water
1. Hard water contain Mg2+ and Ca2+ ion
2. Detergent does not form scum in hard water
3. Soap form scum in hard water
4. Mg 2+ and Ca 2+ in hard water react with soap
5. Soap molecule consist of hydrophobic and hydrophilicpart
6. Hydrophobic part dissolve in oil
7. Hydrophilic part dissolve in water
8. During scrubbing/rinsing the oily stains/spots is
2+2
1
1
1 + 11 + 1
1
1
1
1
1
1
1
1
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washed away
9. Cloth in experiment II /detergent is cleaner than clothin experiment I
10. Detergent in hard water is more effective than soap.
1
1
20
10.
a.(i)
(ii)
b)
c)
The speed at which reactant are converted into product in a
chemical reaction// change in selected quantity of reactant or
produrt per unit of time taken.
Total surface area / concentration of reactant / temperature
of reactant / use of catalyst / pressure of gaseous reactant
(any 4)
To make the coffee powder and sugar dissolve easier inwater.
The heat given to the water will give more kinetic energy tothe particles.
The particles of water, coffee powder and sugar move faster.
They will collide each other more frequent.
The frequency of effective collision will increase.
Precipitate : Sulphur
Materials:0.2 mol dm -3 sodium thiosulphate, 1.0 mol dm -3 sulphuricacid, a piece of white paper marked X at the centre.
Apparatus:150 cm 3 conical flask, stopwatch, 50 cm 3 measuring cylinder,10 cm 3 measuring cylinder, thermometer, Bunsen burner,wire gauze.
Procedure:Using a measuring cylinder, 50 cm 3 of 0.2 mol dm -3 sodiumthiosulphate solution is measured and poured into a conicalflask.
The conical flask is placed on top of a piece of white papermarked X at the centre.
1
1+1
1
1
1
1
1
1
1
1
1
1
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END OF MARKING SCHEME
5 cm 3 of 1.0 mol dm -3 sulphuric acid is measured usinganother measuring cylinder.
The sulphuric acid is poured immediately and carefully intothe conical flask. At the same time, the stop watch is atarted
The mixture in a conical flask is swirled.
The X mark is observed vertically from the top of the conicalflask through the solution.
The stopwatch is stopped once the X mark disappears fromview.
Step 1 7 are repeated using 50 cm 3 of 0.2 mol dm -3 sodiumthiosulphate solution at 40 oC, 50 oC, 60 oC by heating thesolution before 5 cm 3 of sulphuric acid is added in.
(Max 8) ConclusionThe increase of temperature, increase the rate of reaction
1
1
1
1
1
1
1
20
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4541/3/PPPeraturan PermarkahanKimiaKertas 3OKT/NOV 2012
MPSM PAHANG
MARKING SCHEME
PEPERIKSAAN PERCUBAAN SPM 2012
TINGKATAN 5
CHEMISTRY
Paper 3
Kertas skema permarkahan ini mengandungi 14 muka surat bercetak.
Am aran
Peraturan pemarkahan in i adalah SULIT.
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Question Mark scheme score
1(a) Able to state three observations.
Sample answerTest tube I Intensity of blue colour produce is very high //
- Does not produce pink colour.
Test tube II Intensity of pink colour produce is very high //
- Does not produce blue colour.
Test tube III intensity of blue colour produce is very high //
- Does not produce pink colour.
3
Able to state any two correct observations. 2
Able to state any one correct observation 1No response or wrong response 0
1(b) Able to state one inference for each experiment
Sample answer:
Test tube I : iron rust/oxidised // iron atom released electron//
iron(II) ions/ Fe 2+ formed// iron(II) ions
present// rusting occur
Test tube II : iron does not rust// iron(II) ions are not present// zinc corrode // zinc atom release
electron// zinc ions formed // zinc oxidised
Test tube III : iron rust/oxidised // iron atom released electron
// iron(II) ions/ Fe 2+ formed // iron(II) ions
present // rusting occur
3
Able to state any two inferences 2
Able to state any one inference 1
No response or wrong response 0
1(C Able to state the hypothesis accurately
Sample answer:
When a more/ less electropositive metal is in contact with
iron/ferum/Fe, the metal inhibits/ (speeds up) rusting/ corrosion
of iron //
3
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When a more/ less electropositive metal is in contact with
iron/ferum/Fe, rusting of iron/ferum/Fe is slower/faster
If the metal in contact with iron is higher/lower than
iron/ferum/Fe in electrochemical series, the rusting/corrosion of
iron is slower/faster//
The higher/lower the metal in contact with iron in
electrochemical series/than iron/ferum/Fe, the rusting/corrosion
of iron/ferum/Fe is slower/faster
Able to state the hypothesis correctly
Sample answer:
When a more/less electropositive metal, the metal inhibits/
(speeds up) rusting/corrosion of iron//
If the metal in contact with iron is higher than iron/ferum/Fe in
reactivity series, the rusting/corrosion of iron is slower/faster//
The rusting of iron/ferum/Fe is faster/slower, if a less / more
electropositive metal is in contact with iron/ferum/Fe
2
Able to state the idea of hypothesis
Sample answer
Different metal in contact with iron, will cause iron to rust//
Metal can cause iron to rust.
1
No response or wrong response 01 (d) Able to state the three variables correctly
Sample answer:
(i) Manipulated variable:
Type/different metals// position of metal in
electrochemical series
(ii) Responding variable:
3
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Rusting/ corrosion// presence of blue/pink colour
(iii) Constant variable:
Size/mass of iron nail// type of nail// clean iron nails//temperature// medium in which the iron nails are kept
Able to state any two variables correctly 2
Able to state any one variable correctly 1
No response or wrong response 0
1(e) Able to give the operational definition accurately.
Sample answer:When iron is in contact with metal lower than iron in
electrochemical series, blue colouration indicates rusting//
Rusting occurs when iron nail is in contact with copper/tin/less
electropositive metal and form blue colouration//
Blue colouration is formed when iron is in contact with metal
lower than iron in electrochemical series.
3
Able to give the operational definition correctly.
Sample answer:
Blue colouration indicates rusting//
Rusting occurs when iron nail is contact with copper/tin/less
electropositive metal
2
Able to give an idea of the operational definition.Sample answer:
Rusting occurs when the colour of solution changes.//
Rusting occurs.
1
No response or wrong response 0
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OR
Set Initial thermometerreading
Highest thermometerreading, C
I 27 53
II 29 57
III 27 59
Able to record three or five readings correctly 1
No response or wrong response 0
Question Details Score
2.b) Able to construct a table to record the initial temperature of
water, highest temperature of water and increase in temperature
for Set I, Set II and Set III
1.correct titles
2. readings and units
Sample answer:
Set I II III
Initial temperature, C 27.0 29.0 27.0
Highest temperature, oC 53.0 57.0 59.0
Increase in temperature, oC 21.0 29.0 32.00
3
Able to construct a less accurate table that contains the
following:
1. Titles
2. Readings
Sample answer:
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I II III
Initial temperature 27 C 29 27 C
Highest temperature 53.0 57.0 59.0
Increase in temperature 26 C 28 32 C
2
Able to construct a table with at least one title/ reading.
Sample answer :
I II III
Increase in temperature
1
No response or wrong response 0
2.c) Able to sketch the graph of heat of combustion of alcohols
against number of carbon atoms per molecule.
The graph must have the following information:
1. The axes are labeled correctly
2. Correct unit
3. Correct curve
Sample answer:3
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Able to sketch the graph of heat of combustion against number
of carbon atoms
i. without units on y-axis
ii. correct curve
sample answer:2
Able to sketch the graph with only one correct information.
Sample answer:
1
Heat of combustion, KJmol 1
1 2 3 4Number of C atom per molecule
Heat of combustion
1 2 3 4Number of carbon atom
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Or
No response or wrong response 0
2.d) Able to state three correct information from the diagram.
Sample answer:
1. The reaction is an exothermic reaction // heat energy is
released to the surrounding.
2. 726 KJ of heat is released when one mole of methanol is
burnt.
3. Total energy of reactant is higher than the products.
3
Able to state any two correct information. 2
Able to state any one correct information. 1
No response or wrong response. 0
2.e) Able to classify all carbon compounds correctly.
Sample answer:
Hydrocarbon Non-hydrocarbon
Ethene, C 2H4 Propanol, C 3H7OH
Methanoic acid, HCOOH
Prophyl ethanoate,
CH 3COOC 3H7
3
Heat of combustion KJmol 1
Number of C atom
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Able to classify at least three carbon compounds correctly. 2
Able to classify any one carbon compound correctly. 1
No response or wrong response. 0
QuestionNumber
Rubric Score
3(a) Ab le to g iv e th e st atem ent of prob lem correctly.
Sample answ er:
Does all nitrate, sulphate, carbonate and chloride salts aresoluble in water?
3
Ab le to g iv e th e st atem ent of prob lem correctly.
Sample answ er:
Does all salts are soluble in water?
2
Ab le to g iv e th e st atem ent of prob lem correctly.
Sample answ er:
Salt are soluble and insoluble in water
1
No response or wrong response 0
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3(d) Ab le to li st co mp letely the mat eri als and apparat us
Sample answer:
Material:
1. Any suitable nitrate, sulphate, carbonate and chloride
salts soluble and insoluble in water
2. Distilled water
Apparatus:
1. Test tube
2. Spatula
3
Ab le to li st inco mp letely mat eri als and apparat us .
Sample answer:
Materials:
1. Incomplete salt :
List only 3 type of salt Eg zinc nitrate, lead (II) sulphate,
calcium carbonate
2. Distilled water
Apparatus:
1. Test tube
2. Spatula
2
Ab le to g ive an idea of materi als and apparat us .
Sample answ er:
Materials:
1. Incomplete salt :
List only 2 type of salt Eg zinc nitrate, plumbum (II)
sulphate, calcium carbonate
1
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2. Pour 5 cm 3 of distilled water into the test tube
No response or wrong response 0
3(f) Ab le to ex hibi t th e tab ulation of dat a co rrect ly .
Sample answ er:
Salt Solubility of salt in water
Zinc nitrate
Magnesium chloride
Sodium chloride
Lead (II) sulphate
Copper (II) sulpahte
Potassium carbonate
2
Ab le to ex hi bi t t he t abu lat ion o f d ata les s acc uratel y.
Sample answ er:
Salt Solubility of salt in water
1
No response or wrong response 0