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Chemistry Form 4 • MODULE

6 The diagram below shows the set-up of apparatus of a 8 The table below shows the information about three voltaic
chemical cell that shows the direction of electron flow from cells.
zinc to metal Q. Jadual di bawah menunjukkan maklumat tentang tiga sel kimia.
Rajah di bawah menunjukkan susunan radas sel kimia yang menunjukkan Positive
arah pengaliran elektron ke logam Q. Pair of metals terminal Potential difference (V)
Pasangan logam Beza upaya (V)
Terminal positif
W, Z Z 3.1
X, Y Y 0.3
Q Zinc W, X X 1.8
Zink
Dilute sodium What is the potential difference of the voltaic cell when metal
chloride solution Y is paired with metal Z?
Larutan natrium Apakah beza upaya sel kimia apabila logam Y dipasangkan dengan logam
klorida cair Z?
A 1.0 V C 2.1 V
What is metal Q? B 1.3 V D 2.8 V
Apakah logam Q?
A Copper
Kuprum 9 The diagram below shows the set-up of apparatus in a chemical
B Iron cell and electrolytic cell.
Besi Rajah di bawah menunjukkan susunan radas bagi sel kimia dan sel
C Aluminium elekrolisis.
Aluminium
D Magnesium
Magnesium
Zinc P Q Copper R S Copper
7 The diagram below shows the set-up of apparatus used to Zink Kuprum Kuprum
purify impure copper by using electrolysis method. Zinc
Rajah di bawah menunjukkan susunan radas yang digunakan untuk sulphate
menulenkan kuprum tak tulen dengan menggunakan kaedah elektrolisis. solution
Larutan
zink sulfat Copper(II) sulphate solution
Larutan kuprum(II) sulfat
X Y Which of the following is the observation at electrode R?
Antara berikut, yang manakah merupakan pemerhatian pada elektrod
R?
Electrolyte Z A Electrode R becomes thinner
Elektrolit Z Elektrod R semakin nipis
B Electrode R becomes thicker
Elektrod R semakin tebal
Which of the following shows the correct position of pure C A colourless gas is released
copper and impure copper? Gas tanpa warna terbebas
Antara berikut, yang manakah adalah kedudukan yang betul untuk D A brown solid is deposited
kuprum tulen dan kuprum tak tulen?
Pepejal perang terenap
Electrode X Electrode Y Electrolyte Z
Elektrod X Elektrod Y Elektrolit Z 10 The table below shows the results of an experiment to study the
displacement of metal from its solution using other metals.
A Impure copper Pure copper Copper(II) sulphate Jadual di bawah menunjukkan keputusan eksperimen untuk mengkaji
Kuprum tak tulen Kuprum tulen solution penyesaran logam daripada larutan garamnya menggunakan logam
Larutan kuprum(II) lain.
sulfat
Metal Nitrate of Q Nitrate of S
B Pure copper Impure copper Copper(II) sulphate Logam Nitrat bagi Q Nitrat bagi S
Kuprum tulen Kuprum tak tulen solution P
Larutan kuprum(II)
sulfat Q –
C Impure copper Pure copper Sulphuric acid – reaction occur / tindak balas berlaku
Kuprum tak tulen Kuprum tulen Asid sulfurik – no reaction / tiada tindak balas
D Pure copper Impure copper Sulphuric acid Which of the following is the arrangement of metals P, Q and
Kuprum tulen Kuprum tak tulen Asid sulfurik R in ascending order of the tendency of the metals to form
ions?
Antara berikut, yang manakah adalah susunan logam P, Q dan R dalam
susunan menaik kecenderungan logam membentuk ion?
A P, S, Q C S, P, Q
B Q, S, P D S, Q, P

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