WorksheetsChemistry-14 Electricity and Chemical Change Preview
Total questions: 11
Worksheet time: 6mins
Name
Class
Date
1.
What is one way that we may be able to produce hydrogen gas to power cars?
a)
Burning coal
b)
Using oil and gasoline
c)
Electrolysis of water
2.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
3.
What is the name of the positive electrode?
a)
cathode
b)
anode
4.
What is the name of the negative electrode?
a)
cathode
b)
anode
5.
What is the addition of oxygen to a substance called?
a)
decomposition
b)
reduction
c)
oxidation
d)
extraction
6.
What is the removal of oxygen from a substance called?
a)
reduction
b)
extraction
c)
electrolysis
d)
oxidation
7.
What are the ions present in molten Al2O3?
a)
Al2+ and O3-
b)
Al2- and O3+
c)
Al3+ and O2-
d)
Al3- and O2+
8.
What kind of Electrical Current does Electroysis require?
a)
Direct
b)
Indirect
c)
Anternative
9.
What is the name given to the solution that is being electrolysed?
a)
Salt
b)
Mineral
c)
Electrolyte
10.
Explain why the electrolyte has to be a liquid.
a)
So the ions can move
b)
So the electrons can move
c)
So that it doesn't get too hot
d)
So the fish are ok
11.
Which of the following is NOT an insulator?
a)
Wool
b)
Plastic
c)
Copper
d)
Styrofoam
100 %
