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WorksheetsVoltaic Cells
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
Which direction do the electrons flow in wire X and which metal is oxidized?
a)
A
b)
B
c)
C
d)
D
2.
Which statement is correct when the cell produces electricity?
a)
Magnesium atoms lose electrons
b)
Mass of the iron electrode decreases.
c)
Electrons flow from the iron half-cell to the magnesium half-cell.
d)
Negative ion flow from magnesium half-cell to iron half-cell
3.
Which species is oxidized in the following reaction?
a)
Ag
b)
Ag+
c)
Cu
d)
Cu2+
4.
Metal A is more reactive than metal B. Which statement is correct?
a)
Electrons flow in the external circuit from A to B
b)
Positive ions flow through salt bridge from A to B
c)
Positive ions flow in external circuit from B to A.
d)
Electrons flow through salt bridge from B to A
5.
What is the function of Y in cell below?
a)
To complete the circuit
b)
To allow flow of electrons between both cells
c)
To allow flow of ions
d)
To connect both half cells
6.
Below shows a cell diagram for voltaic cell. Which of the following is FALSE?
a)
Electrons flow from anode to cathode
b)
Oxidation happens in anode
c)
Copper undergo reduction to form copper ions
d)
Zinc undergo oxidation to form Zinc ions
7.
Reduction happens at the
a)
anode
b)
cathode
c)
salt bridge
d)
voltmeter
8.
Oxidation happens at the
a)
anode
b)
cathode
c)
salt bridge
d)
voltmeter
9.
Reactions in voltaic cells are
a)
spontaneous, redox reactions
b)
non-spontaneous, redox reactions
c)
spontaneous, non-redox reactions
d)
non-spontaneous, non-redox reactions
10.
This electrode in a voltaic cell gains mass
a)
anode
b)
cathode
11.
This electrode loses mass
a)
anode
b)
cathode
12.
V stands for ...
a)
Voltage
b)
Volts
c)
Voltemeter
d)
Vulcan
13.
In which direction does electricity flow in a voltaic cell (battery)?
a)
Electrons flow from the cathode to the anode
b)
Electrons flow from left to right
c)
Electrons flow from anode to cathode
d)
Electrons flow from right to left
14.
What reaction occurs at the anode?
a)
Ag+ + e- →Ag
b)
Ag → Ag+ + e-
c)
Ni2+ + 2e- → Ni
d)
Ni → Ni2+ + 2e-
15.
a)
a
b)
b
c)
c
d)
d
16.
a)
a
b)
b
c)
c
d)
d
17.
a)
a
b)
b
c)
c
d)
d
18.
a)
a
b)
b
c)
c
d)
d
19.
a)
a
b)
b
c)
c
d)
d
20.
a)
a
b)
b
c)
c
d)
d
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