Worksheets9.3 Voltaic cell
Total questions: 10
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.
Which species is oxidizing agent and which is reducing agent?
a)
A
b)
B
c)
C
d)
D
5.
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
6.
Which changes could take place at positive electrode in a voltaic cell?
a)
I and II
b)
I and III
c)
II and III
d)
I, II and III
7.
What is the role of zinc in the cell?
a)
positive electrode and the oxidizing agent
b)
positive electrode and the reducing agent
c)
negative electrode and the oxidizing agent
d)
negative electrode and the reducing agent
8.
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
9.
What occurs during the operation of a voltaic cell?
a)
A
b)
B
c)
C
d)
D
10.
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
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