SET 1 Koleksi Soalan dan Skema Jawapan SPM KBSM

(iii) Based on your answer in 3(a)(ii), state the pair of electrode that will give
the highest voltage reading. Predict the potential difference of this cell.
Berdasarkan jawapan anda dalam 3(a)(ii), nyatakan pasangan elektrod
yang memberikan bacaan voltan paling tinggi. Ramalkan beza
keupayaan sel ini.


Pair of metal/ Pasangan logam : .........................................................


Potential difference/ Beza keupayaan
[2 marks]
[2 markah]
(iv) If metal Q is copper, suggest metal P. Give a reason.
Jika logam Q adalah kuprum, cadangkan logam P. Berikan satu sebab.






[2 marks]
[2 markah]

(b) Diagram 3.2 shows the set-up of apparatus used by a student to coat an iron spoon with a
layer of copper.
Rajah 3.2 menunjukkan susunan radas yang digunakan oleh pelajar untuk menyadur sudu
besi dengan lapisan kuprum

























Diagram 3.2
Rajah 3.2
















8

(i) State the name of the process carried out by the student.
Nyatakan nama proses yang dijalankan oleh pelajar tersebut.

........................................................................................................................................
[1 mark]
[1 markah]
(ii) State the energy changes for the cell in Diagram 3.2.
Nyatakan perubahan tenaga untuk sel dalam Rajah 3.2.

........................................................................................................................................
[1 mark]
[1 markah]
(iii) Write the half-equations for the reactions that take place at the
Tuliskan persamaan setengah untuk tindak balas yang berlaku di
anode:
anod:

..................................................................................................................................
cathode:
katod:

..................................................................................................................................
[2 marks]

[2 markah]




































9

4 Two experiments were carried out to investigate factors that affect the rate of reaction.
Table 4 shows the description of each experiment.
Dua eksperimen telah dijalankan untuk mengkaji faktor mempengaruhi kadar suatu tindak
balas.
Jadual 4 menunjukkan perincian setiap eksperimen.


Time taken for
collecting 30 cm of
3
gas released, (s)
Experiment Reactant Temperature,°C Masa yang diambil
Eksperimen Bahan tindak balas Suhu,°C
untuk mengumpul 30
3
cm gas yang
terbebas, (s)
Excess zinc powder +
3
20 cm of 0.1 mol dm -3
sulphuric acid
I 30.0 20.0
Serbuk zink berlebihan
3
+ 20 cm asid sulfurik
0.1 mol dm -3

Excess zinc powder +
3
20 cm of 0.1 mol dm -3
sulphuric acid +
copper(II) sulphate
II solution 30.0 12.0
Serbuk zink berlebihan
3
+ 20 cm of 0.1 mol dm -
3 asid sulfurik + larutan
kuprum(II) sulfat

Table 4
Jadual 4

























10

(a) Complete the diagram 4 with a suitable apparatus.
Lengkapkan rajah 4 dengan radas yang sesuai.







Burette
Buret






Water
Air






20 cm of 0.1 mol dm of sulphuric acid + excess zinc granules
3
-3
20 cm asid sulfurik 0.1 mol dm + ketulan zink berlebihan
-3
3
Diagram 4
Rajah 4
[1 mark]
[1 markah]

(b) Write the chemical equation for the reaction between zinc and sulphuric acid.
Tuliskan persamaan kimia bagi tindak balas antara zink dan asid sulfurik

........................................................................................................................................
[2 marks]
[2 markah]

3
(c) Calculate the average rate of the reaction for experiment I and experiment II in cm s .
-1
3
Kira purata kadar tindakbalas untuk eksperimen I dan eksperimen II dalam unit cm s -1
(i) Experiment I
Eksperimen I




(ii) Experiment II
Eksperimen II

[2 marks]
[2 markah]









11

(d) By using collision theory,
Explain the difference in the rate of reaction between Experiment I and Experiment II.
Dengan menggunakan teori perlanggaran,
Terangkan mengapa terdapat perbezaan dalam kadar tindak balas antara Eksperimen I
dan II.















[3 marks]
[3 markah]

(e) Sketch the graphs of volume of gas collected against time for experiment I and experiment
II in the same axis.
Lakarkan graf isipadu gas dikumpul melawan masa bagi eksperimen I dan eksperimen II
dalam paksi yang sama.




































[2 marks]
[2 markah]








12

5 Diagram 5 shows the conversion of lead(II) nitrate.
Rajah 5 menunjukkan pertukaran bagi plumbum(II) nitrat.




Lead(II) nitrate solution I Solid salt R
Larutan plumbum(II) nitrat Na 2 CO 3 solution Pepejal garam R
Larutan Na 2 CO 3
II Heated
Dipanaskan

Solid S Gas T
+ Gas T
Pepejal S


Diagram 5
Rajah 5


(a) (i) Write the chemical formula of lead(II) nitrate.
Tuliskan formula kimia untuk plumbum(II) nitrat.



[1 mark]
[1 markah]


(ii) Name the reaction I.
Namakan tindak balas I.




[1 mark]
[1 markah]

(b) Based on Diagram 5, identify salt R, solid S and gas T.
Berdasarkan Rajah 5, kenal pasti garam R, pepejal S dan gas T.


R

S

T

[3 marks]
[3 markah]






13

(c) State the colour of solid S.
Nyatakan warna pepejal S.



[1 mark]
[1 markah]
(d) (i) Draw a labelled diagram for heating solid salt R in Reaction II.
Lukiskan rajah berlabel bagi pemanasan pepejal garam R dalam tindak balas II.


















[2 marks]
[2 markah]

(ii) Write a chemical equation for Reaction II.
Tuliskan persamaan kimia bagi tindak balas II



[1 mark]
[1 markah]


(e) 2.67 g of salt R is heated in the laboratory. Calculate volume of gas T released at room
condition.
3
[Molar mass solid salt P = 267 g mol -1 ; 1 mol gas occupies 24 dm at room conditions]
2.67 g garam R dipanaskan di dalam makmal. Hitungkan isi padu gas T yang
dibebaskan dalam keadaan bilik.
3
[Jisim molar pepejal garam P = 267 g mol -1 ; 1 mol gas menempati 24 dm pada
keadaan bilik]





[2 marks]
[2 markah]








14

6 Diagram 6.1 shows the apparatus set-up of an experiment to determine the reactivity series of
metals towards oxygen.
Rajah 6.1 menunjukkan susunan radas bagi satu eksperimen untuk menentukan siri kereaktifan
logam terhadap oksigen.


Glass wool Metal powder
Wul kaca Serbuk logam



Potassium manganate(VII)
Kalium manganat(VII)
Heat Heat
Panaskan Panaskan

Diagram 6.1
Rajah 6.1


Table 6.1 shows the observation when different metals react with oxygen.
P, Q and R represent three unknown metals.


Jadual 6.1 menunjukkan pemerhatian bagi logam berbeza yang bertindak balas dengan gas
oksigen.
P, Q dan R mewakili tiga logam yang tidak diketahui.

Experiment Metal powder Observation
Eksperimen Serbuk logam Pemerhatian
Burn brightly
I P
Menyala terang
Glow faintly
II Q
Membara malap
Glow brightly
III R
Membara terang

Zinc Burn slowly
IV
Zink Menyala perlahan

Table 6.1
Rajah 6.1
Based on the experiment,
Berdasarkan eksperimen,
















15

(a) State the function of potassium manganate (VII)
Nyatakan fungsi kalium manganat (VII)



[1 mark]
[1 markah]
(b) Based on Experiment IV,
Berdasarkan Eksperimen IV,
(i) Write a balanced chemical equation of the reaction
Tuliskan persamaan kimia bagi tindak balas itu



[2 marks]
[2 markah]
(ii) State the change in oxidation number of zinc
Nyatakan perubahan nombor pengoksidaan bagi zink





[1 mark]
[1 markah]
(c) Based on the observations in Table 6.1, arrange P, Q, R and zinc in ascending order of
the reactivity towards oxygen.

Berdasarkan kepada pemerhatian di Jadual 6.1, susunkan P, Q, R dan zink mengikut
tertib menaik dalam kereaktifan terhadap oksigen.





[1 mark]
[1 markah]
(d) Metal Q turns black after the reaction
Name metal Q.
Logam Q menjadi hitam selepas tindak balas.
Namakan logam Q



[1 mark]
[1 markah]













16

(e) Carbon is placed between metal P and zinc in the reactivity series of metals.
Which metal can be extracted from their oxides by using carbon when heated together?

Karbon berada di antara logam P dan zink dalam siri kereaktifan logam.
Logam manakah dapat diekstrakkan daripada oksida logamnya dengan menggunakan
karbon apabila dipanaskan bersama?





[1 mark]
[1 markah]


(f) Diagram 6.2 shows the apparatus set-up to investigate the displacement of halogen
from its halide solution. Chlorine water was added to a test tube containing a solution Y
and organic solvent, 1,1,1-trichloroethane.


Rajah 6.2 menunjukkan susunan radas untuk mengkaji penyesaran halogen daripada
larutan halidanya. Air klorin ditambah ke dalam tabung uji yang mengandungi larutan Y
dan pelarut organik 1,1,1-trikloroetana.


Chlorine water
Air klorin


Shake
Solution Y Goncang Brown solution
Larutan Y Larutan perang



Purple
1,1,1-trichloroethane organic layer
1,1,1-trikloroetana Lapisan organik
bewarna ungu
Diagram 6.2
Rajah 6.2
Based on Diagram 6.2
Berdasarkan Rajah 6.2

(i) Name the solution Y.
Namakan larutan Y.



[1 mark]
[1 markah]









17

(ii) Write the ionic equation for the reaction.
Tuliskan persamaan ion bagi tindak balas itu.



[ mark ]
[ markah]
(iii) State the name of another solution that can replace chlorine water.
Nyatakan nama satu larutan lain yang boleh menggantikan air klorin.



[ mark]
[ markah]
































































18

Section B
Bahagian B

[20 marks]
[20 markah]

Answer any one questions from this section.
Jawab mana-mana satu soalan daripada bahagian ini

7. (a) A hydrocarbon W contains of 14.29% hydrogen by mass. 10.5g of hydrocarbon W
3
occupies a volume of 6 dm at room condition.
[ Relative atomic mass: H,1; C,12; 1 mol of gas occupies a volume of 24 dm at room
3
temperature and pressure]
Satu hidrokarbon W, mengandungi 14.29% hidrogen berdasarkan jisim. 10.5g
-3
hidrokarbon W menempati 6 dm pada keadaan suhu.
3
[ Jisim atom relatif: H,1; C,12; 1 mol gas menempati 24 dm pada keadaan bilik]

(i) Determine the empirical formula and molecular formula of hydrocarbon W.
[6 marks]
Tentukan formula empirik dan formula molekul bagi hidrokarbon W.
[6 markah]


(ii) State the name of the homologous series for W and explain your answer.
[2 marks]
Nyatakan nama siri homolog bagi W dan terangkan jawapan anda.
[2 markah]

(iii) Write a balanced chemical equation for the complete combustion of
hydrocarbon W with oxygen. [2 marks]
Tuliskan persamaan kimia seimbang bagi pembakaran lengkap untuk
Hidrokarbon W dengan oksigen.
[2 markah]




























19

(b) Table 7 shows some information about three members of a homologous series.
Jadual 7 menunjukkan beberapa maklumat mengenai tiga ahli bagi satu siri
homolog.
Member of
homologous Molecular formula Preparation Chemical reaction
series Formula molekul Penyediaan Tindak balas kimia
Ahli bagi siri
homolog
Dehydration of Hydrogenation to
alcohol form alkane
Ethene
Etena C2H4 Pendehidratan Penghidrogenan
alkohol untuk membentuk
alkana
Dehydration of Hydrogenation to
alcohol form alkane
Propene Pendehidratan Penghidrogenan
Propena C3H6
alkohol untuk membentuk
alkana
Dehydration of Hydrogenation to
alcohol form alkane
Butene Pendehidratan Penghidrogenan
Butena C4H8
alkohol untuk membentuk
alkana
Table 7
Jadual 7
(i) Based on Table 7, state four characteristics of a homologous series. [4 marks]
Berpandukan kepada Jadual 7, nyatakan empat ciri bagi suatu siri homolog.
[4 markah]

(ii) Ethene can be prepared by ethanol. Describe the preparation of ethene in lab.
In your description, include the chemical equation for the reaction. Suggest a
chemical test to test the ethene gas formed.
[6 marks]
Etena boleh disediakan dengan ethanol. Huraikan penyediaan etena di dalam
lab. Dalam huraian anda, sertakan persamaan kimia bagi tindak balas itu.
Cadangkan satu ujian kimia untuk menguji gas etena yang terhasil.


[6 markah]
















20

8 Diagram 8.1 shows an example of a favourite food among teenagers.
Rajah 8.1 menunjukkan dua contoh makanan kegemaran remaja














Diagram 8.1
Rajah 8.1

(a) (i) Sodium nitrite is an example of food additive added to the meat in the burger
State the type of food additive which sodium nitrite belongs to and its function.
What is the side effect of sodium nitrite on our health?
[3 marks]
Natrium nitrit adalah satu contoh bahan tambah makanan yang ditambahkan
ke dalam daging burger. Nyatakan jenis bahan tambah makanan bagi natrium
nitrit dan fungsinya. Apakah kesan sampingan natrium nitrit ke atas kesihatan
kita?
[3 markah
(ii) The ingredients in the ice cream are as below;

ethyl buthanoate, evaporated milk, sugar, sunset yellow and lecithin.


From the list of the ingredients, state one example of food additive that act as a
stabiliser. What happens if it is not added into the ice cream?
[2 marks]

Kandungan ais krim adalah seperti berikut;





Daripada senarai tersebut pilih satu contoh bahan tambah makanan yang
bertindak sebagai penstabil. Apakah akan berlaku jika bahan tersebut tidak
ditambah ke dalam aiskrim?
[ 2 markah]














21

(b) Two students met a doctor with a symptom shows in table 8.
Dua orang pelajar telah berjumpa doktor dengan simptom penyakit seperti
dalam jadual 8.

Student Symptom
Pelajar Simptom
Ai Ling Hard to sleep, nervous
Sukar hendak tidur, gelisah

Zaquan Prolong chronic cough with
bloody mucus
Batuk teruk berpanjangan yang
berkahak dan berdarah


Table 8
Jadual 8

State the type and example of medicine that should be taken by Ai Ling and
Zaquan to relief their sickness.
Zaquan is advised to finish up the medicine accordingly to the prescription.
Explain why
[6 marks]
Nyatakan jenis dan contoh ubat yang perlu diambil oleh Ai Ling dan Zaquan
bagi merawat penyakit mereka.
Zaquan dinasihatkan supaya menghabiskan ubat tersebut seperti yang telah
dipreskripsikan oleh doktor. Jelaskan mengapa.
[6 markah]
































22

(c) Stubborn stain is made of oily or greasy material. If only water is used, not all the
greasy stain can be removed. Therefore, soap is needed to get rid the stain.
Diagram 8.2 shows a part of the cleansing action of soap particles on a grease
stained cloth.


Kotoran degil adalah terdiri daripada bahan berminyak atau bergris, Sekiranya
hanya menggunakan air, bukan semua kotoran berminyak dapat disingkirkan.Oleh
itu, sabun diperlukan untuk menyingkirkan kotoran itu.
Rajah 8.2 menunjukkan sebahagian tindakan pencucian oleh zarah sabun ke atas
kotoran bergris pada kain














Diagram, 8.2
Rajah 8.2
Explain how cleansing action of soap can remove a greasy stains.
[9 marks]
Terangkan bagaimana tindakan sabun boleh menghilangkan kotoran bergris.
[9 markah]





































23

Section C
Bahagian C

[20 marks]
[20 markah]

Answer any one questions from this section.
Jawab mana-mana satu soalan daripada bahagian ini

9 (a) Table 9 shows the heat of neutralisation for two sets of experiment using different
monoprotic acids, X and Y reacting with potassium hydroxide solution.


Jadual 9 menunjukkan haba peneutralan bagi dua set eksperimen yang menggunakan
asid monoprotik, yang berlainan, X dan Y yang bertindak balas dengan larutan kalium
hidroksida.



Set Reactants Heat of neutralisation(kJmol )
-1
-1
Bahan tindak balas Haba Peneutralan (kJ mol )


3
I 50 cm 2.0 mol dm -3 of monoprotic acid X
+
3
-3
50 cm 2.0 mol dm potassium hydroxide solution -57
3
-3
50 cm 2.0 mol dm asid monoprotik X
+
-3
3
50 cm 2.0 mol dm larutan kalium hidroksida

II 50 cm 2.0 mol dm -3 of monoprotic acid Y
3
+
-3
50 cm 2.0 mol dm potassium hydroxide solution -55
3
-3
3
50 cm 2.0 mol dm asid monoprotik Y
+
3
-3
50 cm 2.0 mol dm larutan kalium hidroksida

Table 9
Jadual 9







24

(i) Based on Table 9, name one example of acid X and acid Y.
[2 marks]

Berdasarkan Jadual 9 namakan satu contoh asid X dan asid Y.
[2 markah]


(ii) Explain why there is a difference in the values of the heat of neutralisation.
[4 marks]
Jelaskan mengapa terdapat perbezaan nilai haba peneutralan itu.
[4 markah]
(b) Calculate the change in temperature of the mixture in set I
[Specific heat capacity of solution: 4.2 J g -1 o C ]
-1
[4 marks]
Hitung perubahan suhu bagi campuran dalam set I.
-1
[Muatan haba tentu larutan: 4.2 J g -1 o C ]
[4 markah]


(c) By using either acid X or acid Y, describe an experiment to determine the heat of
neutralisation.
In your description include:
Procedure of the experiment
The thermo chemical equation involved
Energy level diagram for the reaction


[10 marks]


Dengan menggunakan sama ada asid X atau asid Y, huraikan satu eksperimen untuk
menentukan haba peneutralan.
Dalam huraian anda,sertakan
Prosedur eksperimen
Persamaan termokimia yang terlibat.
Rajah aras tenaga bagi tindak balas itu
[10 markah]





















25

10 (a) Table 10.1 shows the properties and the arrangement of atoms in two types of materials,
P and Q. Material Q is an alloy while P is its pure metal.
Jadual 10.1 menunjukkan sifat-sifat dan susunan atom dalam dua jenis bahan, P dan Q.
Bahan Q ialah sejenis aloi manakala P ialah logam tulennya.


Material P Material Q
Bahan P Bahan Q


Lembut dan kurang kuat Keras dan kuat

Not easily rust
Mudah berkarat Tidak mudah berkarat

Arrangement of atoms Arrangement of atoms
Susunan atom Susunan atom


Fe atom C atom
Atom Fe Atom C











Table 10.1
Jadual 10.1

(i) Material Q is more suitable than material P to make a railway tracks.
Explain in terms of arrangement of atoms, why material Q is more suitable to make a
railway tracks.
[4 marks]
Bahan Q lebih sesuai dijadikan landasan keretapi berbanding bahan P.
Terangkan dari segi susunan atom, mengapa bahan Q lebih sesuai dijadikan
landasan keretapi.
[4 markah]





















26

(ii) By using one example of pure metal and its alloy, describe an experiment to show
that alloy is able to withstand corrosion compare to its pure metal.
Your answer should include procedure, result and conclusion.
[10 marks]
Dengan menggunakan satu contoh logam tulen dan aloinya, hurai satu eksperimen
untuk menunjukkan aloi tahan terhadap kakisan berbanding logam tulennya.
Jawapan anda haruslah mengandungi prosedur, keputusan dan kesimpulan.


[10 markah]
(b) Table 10.2 shows three manufactured substances in industries, X, Y and Z with their uses.
Jadual 10.2 menunjukkan tiga bahan buatan industri X, Y dan Z serta kegunaannya.


Manufactured substances Use
Bahan buatan Kegunaan

X To make glass cookware and boiling tubes.
Untuk membuat alatan memasak berkaca dan
tabung didih.

Y To make helmets and water storage tanks.
Untuk membuat topi keledar dan tangki
penyimpanan air.

Z To make internal wall of the furnace.
Untuk membuat lapisan dalam dinding relau.
Table 10.2
Jadual 10.2


Based on Table 10.2, determine the name of substances X, Y and Z.
Give one specific property of each substance according to its use.
[6 marks]

Berdasarkan Jadual 10.2, tentukan nama bagi bahan-bahan X, Y dan Z.
Berikan satu sifat yang khusus bagi setiap bahan bersesuaian dengan kegunaannya.
[6 markah]





END OF QUESTION PAPER
KERTAS PEPERIKSAAN TAMAT










27

28

SULIT 4541/3

NAMA
TINGKATAN

MPSM CAWANGAN PULAU PINANG DENGAN
KERJASAMA SEKTOR PENGURUSAN AKADEMIK
JABATAN PENDIDIKAN PULAU PINANG





MODUL BERFOKUS KBAT SIJIL PELAJARAN MALAYSIA 20


KIMIA
Kertas 3
1 ½ jam Satu jam tiga puluh minit





JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU





1. Tuliskan nama dan tingkatan pada ruang
yang disediakan. Untuk Kegunaan Pemeriksa
2. Kertas soalan ini adalah dalam dwibahasa. Soalan Markah Markah

3. Soalan dalam bahasa Inggeris mendahului Penuh Diperoleh
soalan yang sepadan dalam bahasa Melayu.
1 33
4. Calon dibenarkan menjawab keseluruhan atau
sebahagian soalan sama ada dalam bahasa
Inggeris atau bahasa Melayu. 2 17


JUMLAH 50























Kertas soalan ini mengandungi 6 halaman bercetak
1

This question paper consists of two questions.
Answer all questions.
Kertas soalan ini mengandungi dua soalan.
Jawab semua soalan.

1. Diagram 1 shows three sets, Set I, Set II and Set III of the apparatus set-up for an
experiment to study the effect of concentration on the rate of reaction between marble
and hydrochloric acid.
Rajah 1 menunjukkan tiga set, Set I, Set II dan Set III, susunan radas satu eksperimen
untuk mengkaji kesan kepekatan terhadap kadar tindak balas antara marmar dan asid
hidroklorik.

Set Before experiment After 8 minutes
Set Sebelum eksperimen Selepas 8 minit
Hydrochloric
0.1 mol dm -3 2 g marble acid Marble
hydrochloric acid chips Asid chips
Asid hidroklorik 2 g ketulan hidroklorik Ketulan
0.1 mol dm -3 marmar marmar



I



150.7011 g 150.6392 g



Mass before experiment = Mass after 8 minutes =


Jisim sebelum eksperimen Jisim selepas 8 minit

-3 Hydrochloric
0.5 mol dm 2 g marble acid Marble
hydrochloric acid chips Asid chips
Asid hidroklorik
-3 2 g ketulan hidroklorik Ketulan
0.5 mol dm marmar marmar




II


150.7011 g 150.5523 g



Mass before experiment = Mass after 8 minutes =

Jisim sebelum eksperimen Jisim selepas 8 minit






2

-3 Hydrochloric
1.0 mol dm 2 g marble acid Marble

hydrochloric acid chips Asid chips

Asid hidroklorik 2 g ketulan hidroklorik Ketulan

-3

1.0 mol dm marmar marmar


III




150.7011 g 150.4689 g



Mass before experiment = Mass after 8 minutes =

Jisim sebelum eksperimen Jisim selepas 8 minit


Diagram 1
Rajah 1

a) Record the mass to two decimal places in the spaces provided in Diagram 1.
Rekod jisim kepada dua tempat perpuluhan dalam ruang yang disediakan dalam
Rajah 1.
[3 marks]
[3 markah]

b) Construct a table to record the reading of mass in Diagram 1.
Bina satu jadual untuk merekod bacaan jisim dalam Rajah 1.
















[3 marks]
[3 markah]

c) Based on Set I in Diagram 1, state one observation.
Berdasarkan Set I dalam Rajah 1, nyatakan satu pemerhatian.




[3 marks]
[3 markah]
3

d) State the inference based on the observation in 1(c).
Nyatakan inferens berdasarkan pemerhatian di 1(c)




[3 marks]
[3 markah]

e) State the variables for this experiment.
Nyatakan pemboleh ubah bagi eksperimen ini.

Manipulated variable
Pemboleh ubah dimanipulasikan

Responding variable
Pemboleh ubah bergerak balas

Fixed variable
Pemboleh ubah dimalarkan

[3 marks]
[3 markah]

f) State one hypothesis for this experiment.
Nyatakan satu hipotesis untuk eksperimen ini.




[3 marks]
[3 markah]

g) The experiment in Set I was modified by using 0.8 mol dm hydrochloric acid.
-3
Predict the electronic balance reading after eight minutes.
Eksperimen dalam Set I diubah suai dengan menggunakan asid hidroklorik
-3
0.8 mol dm . Ramalkan bacaan penimbang elektronik selepas lapan minit.


[3 marks]
[3 markah]

h) State the operational definition for the rate of reaction in this experiment.
Nyatakan definisi secara operasi bagi kadar tindak balas dalam eksperimen ini.




[3 marks]
[3 markah]






4

i) Hydrochloric acid used in the experiment in Set I is in excess. The experiment in
Set I is allowed to run until the reaction is complete. State the relationship between
the change in mass with time.
Asid hidroklorik yang digunakan dalam Set I adalah berlebihan. Eksperimen dalam
Set I dijalankan sehingga tindak balas lengkap. Nyatakan hubungan antara
perubahan jisim dengan masa.




[3 marks]
[3 markah]

j) Write the chemical equation for the reaction between hydrochloric acid and calcium
carbonate.
Tuliskan persamaan kimia bagi tindak balas antara asid hidroklorik dan kalsium
karbonat.


[3 marks]
[3 markah]

k) A list of substances is identified as follows:
Satu senarai bahan dikenal pasti seperti berikut:









Soap Carbonated drink Vinegar
Sabun Minuman Cuka Baking powder
berkarbonat Serbuk penaik


Classify these four substances into substances with pH more than 7 and substances
with pH less than 7.
Kelaskan keempat-empat bahan berikut kepada bahan dengan pH lebih daripada 7
dan bahan dengan pH kurang daripada 7.

Substance with pH more than 7 Substance with pH less than 7
Bahan dengan pH lebih daripada 7 Bahan dengan pH kurang daripada 7






[3 marks]
[3 markah]





5

2. Diagram 2 shows the conversation between two students.
Rajah 2 menunjukkan perbualan di antara dua orang pelajar.

Why is the experiment of electroplating the iron

spoon unsuccessful for my group ? The connection Oh! No wonder electroplating does

of iron spoon and copper to the battery terminals are not occur. You used the wrong

correct. electrolyte.

Mengapakah eksperimen penyaduran sudu besi Oh! Patutlah penyaduran tidak

kumpulan saya tak berjaya? Sambungan sudu besi berlaku. Anda menggunakan elektrolit
dan kuprum pada terminal bateri adalah betul. yang salah.














Diagram 2
Rajah 2

Based on the situation above, plan a laboratory experiment to study the factor that affects
the above result.
Berdasarkan situasi di atas, rancang satu eksperimen makmal untuk mengkaji faktor yang
mempengaruhi keputusan di atas.

Your planning should include the following aspects:
Perancangan anda hendaklah mengandungi aspek-aspek berikut :

a) Problem statement
Pernyataan masalah

b) All the variables
Semua pembolehubah

c) Statement of hypothesis
Hipotesis

d) List of materials and apparatus
Senarai bahan dan radas

e) Procedure for the experiment
Prosedur eksperimen

f) Tabulation of data
Penjadualan data


[17 marks/ markah]



6

SKEMA PEMARKAHAN KIMIA KERTAS 1

MODUL MPSM 2020




1 D 11 C 21 C 31 C 41 A
2 B 12 A 22 A 32 B 42 A

3 C 13 D 23 B 33 D 43 A

4 C 14 D 24 B 34 B 44 D
5 C 15 A 25 D 35 C 45 D

6 B 16 C 26 D 36 B 46 B
7 B 17 A 27 B 37 A 47 B

8 C 18 B 28 C 38 A 48 B
9 D 19 B 29 B 39 D 49 C

10 C 20 D 30 B 40 D 50 A

SKEMA PEMARKAHAN KIMIA KERTAS 2
MODUL MPSM PULAU PINANG 2020

BAHAGIAN A
Sub Jumlah
No
Markah markah

(a) C // G 1 1
1
C // G
(b) F 1 1
(c) Atom B has achieved a stable octet electron arrangement 1 1
Atom B telah mencapai susunan elektron oktet yang stabil
(d) (i) 2.8.5 1 2
2.8.5
(ii) Group 15, Period 3 1
Kumpulan 15, Kala 3
(e) (i) H 1 2
(ii) Transition elements 1
Unsur Peralihan
(f) Ionic compound 1 2
Sebatian ion

GF 1
TOTAL 9 9

Sub Jumlah
No
Markah markah
(a) X : 2 1
2 Y : 2 1
Z : 2 1 3
(b) Reactant/ Bahan : Potassium/ water 1
Kalium/air

Product/ Hasil : Potassium hydroxide/ hydrogen 1 2
Kalium hidroksida/ hidrogen
(c) 2 mol of potassium react with 2 mol of water to produce 2 mol of 1 1
potassium hydroxide and 1 mol of hidrogen
2 mol kalium bertindak balas dengan 2 mol air untuk
menghasilkan 2 mol kalium hidroksida dan 1 mol hydrogen
3
3
Volume of hydrogen, V = 50 dm // 0.05 dm
Isipadu hidrogen 1000

Number of mol H2, n = 0.05 mol // 0.002 mol 1
Bilangan mol H2 24

Number of mol K, n = 0.002 x 2 // 0.004 mol 1
Bilangan mol K

Mass of K = 0.004 x 39 // 0.156 g 1 3

TOTAL 9 9
1

Sub Jumlah
No Skema markah
Markah markah

(a) (i) Copper (II) sulphate solution, Sodium hidroksida solution, 1
Hydrochloric Acid or any suitable answer.
3
Larutan Kuprum (II) sulfat, larutan Natrium hidroksida, Asid
hidroklorik atau mana-mana jawapan yang sesuai
(ii) T,S,R,Q,P 1
(iii) T,P 1

2.9 V 1
(iv) Silver
Argentum 1

Because silver is lower than Copper in Electrochemical

Series // Silver is less electropositive than copper
Kerana Argentum terletak di bawah Kuprum di dalam Siri
Elektrokimia // Argentum kurang elektropositif daripada 1 6
kuprum
(b) (i) Electroplating 1

penyaduran
(ii) electrical energy to chemical energy 1

Tenaga elektrik kepada tenaga kimia
(iii) 2+ + 2e - 1
Anod

-
2+
cathode: Cu + 2e 1 4
katod
10



Sub Jumlah
No Skema markah
Markah markah

(a) * draw stopper on the mouth of conical flask 1
4 * lukis penutup di mulut kelalang kon

(b) Zn + H2SO4 ZnSO4 + H2 2
3 -1
3 -1
(c) (i) Rate = 30/20 cm s // 1.5 cm s 1
3 -1
(ii) Rate = 30/12 cm s // 2.5 cm s 1 2
3 -1
(d) 1. The rate of reaction in Expt II is higher than Expt I 1

2. Catalyst lower the activation energy in Expt II 1

+
3. The frequency of effective collision between H ion and Zn 1 3
atom in expt II is higher.
1. Kadar tindak balas dalam eksp II lebih tinggi dari eksperimen I




2

2. Mangkin merendahkan tenaga pengaktifan dalam eksp II.
+
3. Frekuensi perlanggaran berkesan antara ion H dan atom Zn
dalam eksperimen II bertambah

(e)




II

I






Correct shape of curve 1
Correct label of axis X and Y 1 2

10

Sub Jumlah
No Skema markah
Markah markah

5 (a) (i) Pb(NO3)2 1
(ii) Penguraian ganda dua 1
(b) R : plumbum (II) karbonat 1
S : plumbum (II) Oksida 1 3
T : karbon dioksida 1
(c) Berwarna perang semasa panas dan kuning semasa sejuk 1
(d) (i)










berfungsi 1
berlabel 1 2
(ii) PbCO3 PbO + CO2 1
(e) Bilangan mol = 2.67/267 // 0.1 mol 1
Isipadu = 0.1 x 24 // 2.4 dm 1 2
3
11




3

Sub Jumlah
No Skema markah
Markah markah
6 (a) Membekalkan oksigen untuk pembakaran logam 1 1
(b) (i) 2Zn + O2 2ZnO 1+1 2
(ii) 0 kepada +2 1 1
(c) Q, R, Zink, P 1 1
(d) Kuprum 1 1
(e) Q//R 1 1
(f) (i) Kalium iodide 1 1
-
-
(ii) Cl2 + 2I 2Cl + I2 1+1 2
(iii) Air bromin 1 1

JUMLAH 11


































4

BAHAGIAN B

Sub Jumlah
No Skema markah
Markah markah
7 (a) (i) Element C H
Unsur
Mass in 100g 100-14.29 = 14.29g
Jisim dalam 100g 85.71g
Mole 85.71 / 12 14.29 / 1
mol = 7.143 = 14.29 1
Mol ratio 1 2
Nisbah mol
Empirical formula
Formula empirik CH2 1

Molar mass of W = mass x molar volume
Volume
Jisim molar W = jisim x isipadu molar
isipadu

= 10.5 x 24 1
6
-1
= 42 g mol 1

Molar mass of W = ( 12+2) n
Jisim molar = (12+2) n

42 = 14n 1
n = 3


molecular formula W = (CH2)n

Formula molekul W = (CH2)n

1 6
= C3H6
(ii) Homologous series of W is Alkene. 1
Siri homolog W ialah Alkena.
The general formula of W is Cn H2n,
Formula Umum untuk W ialah Cn H2n, 1 2
9
(iii) C3H6 + /2 O2 3CO2 + 3H2O
Or 2 C3H6 + 9 O2 6CO2 + 6H2O
All reactants and products correct
Semua bahan dan hasil betul 1
Balance the chemical equation
Seimbangkan persamaan kimia 1 2
(b) (i) All the members contain the same functional group
Semua ahli mempunyai kumpulan berfungsi yang 1
sama.
Can be represented by a general formula.
Boleh diwakili dengan satu formula am. 1
The difference between one member and the next
member is -CH2.
5

Perbezaan antara satu ahli dengan ahli berikut ialah 1
-CH2.
All members can be prepared by using a similar
method of preparation.
Semua ahli boleh disediakan dengan menggunakan
kaedah penyediaan yang sama. 1
All members have similar chemical properties.
Semua ahli mempunyai sifat-sifat kimia yang sama 1 Max 4
(ii)
Preparation of ethene:
Penyediaan etena :

1. Ethene can be prepared by dehydration of ethanol
using dehydrating agent such as porcelain chips / 1
aluminium oxide concentrated sulphuric acid.
Etena dapat dihasilkan melalui pendehidratan etanol
menggunakan agen pendehidratan seperti serpihan
porselin/ aluminium oxide/ asid sulfuric pekat.

2. Warm the glass wool which is soaked in ethanol to
form ethanol vapour. 1
Panaskan wol kaca yang telah direndami dengan
etanol untuk membentuk wap ethanol.

3. The ethanol vapour then passes through the 1
strongly heated porcelain chips.
Wap etanol kemudiannya dialirkan melalui serpihan
porselin yang telah dipanaskan dengan kuat.

4. The ethene gas produced is collected by 1
displacement of water.
Gas etena yang dihasilkan dikutip melalui
penyesaran air.


Chemical equation:
Persamaan kimia: 1

C2H5OH C2H4 + H2O

Chemical test:
Ujian kimia:
1 6
The ethene gas produced will decolourised the acidified
potassium manganate (VII) solution
Gas etena yang terhasil akan menyahwarnakan larutan
kalium manganate (VII) berasid.

JUMLAH 20



6

Sub Jumlah
No Skema markah
Markah markah

(a) (i) [Menyatakan jenis bahan tambah dan fungsinya]
Pengawet 1
Melambatkan pembiakan/pertumbuhan mikroorganisma
yang merosakkan daging // menghalang atau melambatkan
8 kerosakan daging. 1

[ Menyatakan kesan sampingan natrium nitrit]
Risiko penyakit kanser 1
3
(ii) [Menyatakan nama penstabil]
Lesiitin 1

[Menyatakan kesan tiada penstabil dalam ais krim]
Ais krim terpisah kepada dua lapisan. 1
2
(b) [Menyatakan jenis dan contoh ubat oleh Ai Ling dan Zaquan]
Ai Ling Psikoteraputik , Barbiturat / Trankuilizer 1+1
Zaquan - Antibiotik, Penisilin / Streptomisin 1+1

-Untuk memastikan semua bakteria dibunuh 1
- Supaya penyakit tidak menyerang semula // bakteria tidak imun 1
terhadap ubat // dos yang lebih tinggi diperlukan apabila penyakit
yang sama menyerang semula
6
(c) [Menerangkan tindakan pencucian sabun ke atas kotoran bergris]
1. ion sabun terdiri daripada bahagian hidrofobik/ kovalen 1
dan bahagian hidrofilik / ionic
2. Bahagian hidrofilik larut dalam air 1
3. Bahagian hidrofobik larut dalam minyak 1
4. Sabun merendahkan ketegangan permukaan air 1
5. Memudahkan permukaan kain dibasahi // menambah
kesan pembasahan sabun // lebih luas permukaan kain
dibasahi 1
6. Sabun mengemulsikan / memecahkan minyak kepada
titisan kecil 1
7. Buih membantu mengapungkan titisan / kotoran
berminyak 1
8. Semasa menggosok / kocakan 1
9. molekul sabun bersama kotoran ditarik keluar // molekul
air menarik bahagian hidrofilik menyebabkan kotoran 1 9
tertanggal.
20






7

BAHAGIAN C

Sub Jumlah
No Skema markah
Markah markah

(a) (i) X: asid hidroklorik/ asid nitrik 1
9 r: asid sulfurik

Y: asid metanoik/asid etanoik/asid propanoik 1 2
r: cuka
(ii) 1.X adalah asid kuat 1
2. Y adalah asid lemah 1
3. Asid X mengion dengan lengkap dalam air untuk 1
membentuk ion hidrogen//
Asid Y mengion separa lengkap dalam air untuk
membentuk ion hidrogen
4.Sebahagian daripada tenaga haba yang terbebas 1
semasa peneutralan diserap semula oleh molekul asid Y 4
untuk mengion lengkap bagi membentuk ion hidrogen
(b) 1. bilangan mol = 50 x 2.0 // 0.1 1
1000

3
3
2. V = 50cm + 50cm // 100 cm 3 1

3. H = 0.1 x 57000 // 5700 J 1

o
o
4. = 5700 C // 13.57 C //13.6 C
o
100 x 4.2 1 4

3
-3
(c) 1. Sukat dan masukkan 50cm 2.0 mol dm larutan kalium
hidroksida ke dalam cawan plastik/polistirena 1
2. Catat suhu awal larutan 1
3
-3
3. Sukat dan masukkan 50cm 2.0 mol dm asid X/Y ke
dalam cawan plastik/polostirena yang lain 1
4. Catat suhu awal larutan 1
5. Tuangkan asid X/Y dengan cepat ke dalam larutan
kalium hidroksida 1
6. Kacau campuran 1
7. Catat suhu tertinggi yang dicapai 1


8.
HCl + KOH KCl + H2 - 57 kJ mol -1 1
//
CH3COOH + KOH CH3COOK + H2 -55 kJ mol -1

9. Paksi Y dilabel dan aras tenaga yang betul 1

8

10. Bahan dan hasil tindak balas dilabel dan nilai haba 1
tindak balas betul






10




Jumlah 20








































9

Sub Jumlah
No Skema markah
Markah markah
(a) (i) 1. Bahan Q terdiri daripada dua jenis atom yang berlainan 1
saiz.
2. Kehadiran atom asing mengganggu susunan teratur 1
logam tulen.
10
3. Apabila daya luar dikenakan, lapisan atom sukar 1
menggelongsor di atas satu sama lain.
4. Menjadikan bahan Q lebih keras dan kuat. 1 4

(ii) Prosedur:
1. Bersihkan paku besi dan paku keluli/ keluli nirkarat 1
menggunakan kertas pasir.
2. Kedua-dua paku dimasukkan ke dalam tabung uji yang 1
berasingan.
3. Tuangkan larutan agar-agar yang mengandungi larutan 1
kalium heksasianoferat (III) ke dalam kedua-dua tabung
uji itu hingga paku tenggelam.
4. Kedua-dua tabung uji itu diletakkan pada rak tabung uji 1
dan dibiarkan selama tiga hari.
5. Pemerhatian direkodkan. 1

Keputusan:
6. Jenis paku Pemerhatian 1
7. Besi Tompokan biru gelap banyak 1
8. Keluli / keluli Tompokan biru gelap sedikit /
nirkarat tiada 1

Kesimpulan:
9. Paku besi berkarat dengan cepat/ banyak. 1
10. Paku (keluli) / (keluli nirkarat) (berkarat perlahan / 1
sedikit) / (tidak berkarat). 10

(b) X : Kaca borosilikat - Tahan terhadap suhu tinggi dan tindak 1 + 1
balas kimia.
Y : Gentian kaca - Kuat dan ringan 1 + 1
Z : Seramik - Tahan terhadap suhu tinggi. 1 + 1 6
20



















10

MODUL MPSM PULAU PINANG
PERATURAN PEMARKAHAN KIMIA KERTAS 3, 2020

Qn No. Score
Able to accurately record all readings to two decimal places and with unit
Answer 3

Set I: 150.70, 150.64; Set II: 150.70, 150.55; Set III: 150.70, 150.47

Able to record any four readings correctly
1(a) Sample answers

2
1. Set I: 150.70, 150.63 2. Set I: 150.7011, 150.6392
Set II: 150.70, 150.55 Set II: 150.7011, 150.5523
Set III: 150.70, 150.46 Set III: 150.7011, 150.4689

Able to record any three readings correctly 1

Able to construct a table that consists of
1. Manipulated variable with correct unit
2. Mass of conical flask and its content with correct unit before the experiment
3. Mass of conical flask and its content with correct unit after the experiment
4. All data on mass transferred correctly
3
Sample answer:
-3
Concentration of hydrochloric acid (mol dm ) 0.1 0.5 1.0
Mass before experiment (g) 150.70 150.70 150.70
Mass after experiment (g) 150.64 150.55 150.47

Able to construct a table that consists of
1. Manipulated variable
2.Mass of conical flask and its content before the experiment
3.Mass of conical flask and its content after the experiment
1(b)
4.Four data on mass transferred correctly
2
Sample answer

Concentration 0.1 0.5 1.0
Mass before experiment 150.70 150.70 150.70
Mass after experiment 150.64 150.47 150.55

Able to give an idea of tabulation of data that consists of

1. Manipulated variable
2.Mass of conical flask and its content before / after the experiment
3.Two data on mass transferred correctly 1

Sample answer
Concentration 0.1 0.5
Mass 150.70 150.70

Able to state one observation correctly

Sample answer: 3

1. Bubbles produced



Able to state one observation less correctly

Sample answers:
2
1. Air bubbles produced
1(c) 2. Mass reading decreases

Able to give an idea of the observation

Sample answers:

1. Conical flask becomes warm 1
2. Mass is 150.64 g
3. Mass changes

Able to state a corresponding inference correctly

Sample answer: 3


1. Carbon dioxide is released


Able to state a corresponding inference less correctly

Sample answers:
2
1(d) 1. Acid and calcium carbonate reacts
2. Gas is released


Able to state an idea of a corresponding
inference

Sample answers 1

1. Gas is formed
2. Heat is released

Able to state all the variables correctly

Sample answers

Manipulated variable: Concentration of hydrochloric acid 3


1(e) Responding variable : Rate of reaction // Change in mass of CaCO3


Fixed variable : Hydrochloric acid // Mass of CaCO3 // Temperature // Size of CaCO3

2
Able to state any two variables correctly or one correct variable and idea of two other variables
1
Able to state any one variable correctly or idea of all the variables
Able to state the relationship with direction between the manipulated variable and the responding variable

Sample answers:
3
1. The higher the concentration of hydrochloric acid, the higher the rate of reaction
2. The higher the concentration of hydrochloric acid , the larger the change in mass of CaCO3

Able to state the relationship between the manipulated variable and the responding variable

1(f) Sample answers:
2
1. The higher the concentration of hydrochloric acid, the faster the reaction
2. Change in concentration of hydrochloric affect the change in mass of CaCO 3
Able to state an idea of hypothesis

Sample answer: 1

1. Concentration affects mass

Able to correctly predict the electronic balance reading

3
Answer: [150.4720 150.5550 g]

Able to predict less correctly the electronic balance reading

Sample answers:

1. More than 150.4689 and less than 150.5523 2
1(g) 2. [150.4689 150.4719]
3. [150.5524 150.5549]

Able to give an idea of predicting the ammeter reading

Sample answer: 1

1. More than 150.4689

Able to state the operational definition for rate of reaction with the following criteria:

(i) What should be done
(ii) What should be observed 3

Sample answer

1. Change in mass of when time is taken at 8 minutes.

1(h) Able to state the operational definition for rate of reaction with the following criteria:

(i) What should be done or
(ii) What should be observed
2
Sample answers:

1. Change in mass when time is taken
2. Mass when time is taken at 8 minutes

Able to give an idea for the operational definition for the rate of reaction

Sample answers:
1
1. Time is taken
2. Change in mass after some time

Able to state correctly the relationship between the change in mass with time

Sample answer: 3

1. When time increases, the change in mass increases until a constant

Able to state less correctly the relationship between the change in mass with time
1(i) Sample answer: 2

1. When time increases, the change in mass increases.
1.
Able to give an idea of the relationship between the change in mass with time
Sample answer: 1

1. Mass increases with time

Able to write a balanced chemical equation with the following criteria

(i) Correct chemical formulae for all reactants and products
(ii) Correct balanced equation
3

Sample answer:

1. 2HCl + CaCO3 CaCl2 + H2O + CO2

1(j) Able to write a chemical equation with all correct formulae


Sample answer: 2

1. HCl + CaCO3 CaCl2 + H2O + CO2

Able to give an idea of chemical equation

Sample answer: 1

1. HCl + CaCO3 CaCl2 + H2CO3


Able to classify all the substances correctly


Answer Substance with pH more than 7 Substance with pH less than 7
3
Soap Carbonated drink
1(k)
Baking powder Vinegar


Able to classify any three substances correctly 2

Able to classify any two substances correctly 1
2(a) Able to give the problem statement correctly
Sample answers
1. How does the type of electrolyte affect electroplating? 3
2. How does zinc sulphate and copper (II) sulphate solutions affect electroplating?

Able to give the problem statement less correctly
Sample answer 2
1. How does the type of electrolyte affect the experiment




Able to to give an idea of problem statement

Sample answer: 1

1. How is electroplating done.


Able to state all variables correctly
2(b) Sample answers:
Manipulated variable: Type of electrolyte // Zinc sulphate and copper (II) sulphate solutions 3

Responding variable : Brown deposit // Electroplating

Fixed variable : Copper at the anode


Able to state any two variables correctly or Able to state any one correct variable and idea of two other 2

variables


1
Able to state any one variable correctly or Able to state idea of all variables

Able to state the relationship with direction between the manipulated variable and the responding variable

Sample answer
1. Copper (II) sulphate solution produces brown deposit at the iron spoon but 3
Zinc sulphate solution does not produce brown deposit at the iron spoon


2(c) Able to state the relationship between the manipulated variable and the responding variable
Sample answer: 2

1. Copper (II) sulphate solution produces brown deposit on iron spoon

Able to give an idea of the hypothesis

Sample answer: 1
1. Copper (II) sulphate solution coats iron spoon
.

Able to list the materials and apparatus completely

Sample answer:

Materials

1. Iron spoon 2. Copper (II) sulphate solution 3. Copper rod 4. Zinc sulphate solution

Apparatus

5. Beaker 6. Connecting wires 7. Batteries 8. Switch 9. Sandpaper


Able to list the materials and apparatus less completely
Sample answer

Materials
2(d) 1. Iron spoon 2. Copper (II) sulphate solution 3. Copper rod 2

Apparatus

4. [Container] 5. Connecting wires 6. Batteries



Able to give an idea of the list of materials and apparatus

Sample answer:

Materials:
1
1. Iron spoon 2. [electrolyte]

Apparatus

3. [Suitable container] 4. Batteries


Able to state correctly all the steps in the procedure
Sample answer:

1. Rub the iron spoon and copper rod with sandpaper
2. Pour copper (II) sulphate solution into a beaker until two-thirds full 3
3. Insert the iron spoon and copper rod into the solution.
2(e) 4. Complete the circuit
5. Observe the iron spoon and record it in a table
6. Repeat the experiment by replacing copper (II) sulphate solution with zinc sulphate solution



2
Able to state less correctly the steps 2, 3, 5 and 6


Able to state an idea of steps 2 and 3 1

Able to construct a table that consists of:

1. Heading for manipulated variable and

2. Headings for responding variable

Sample answer:
2

Solution
Observation
Cooper (II) sulphate
Zinc sulphate
2(f)



Able to construct a table that consists of:

1. Heading for manipulated variable or

2. Headings for responding variable
Sample answer: 1


Solution Observation

FIZIK