WorksheetsElectrolysis
Total questions: 15
Worksheet time: 12mins
Name
Class
Date
1.
What is an ore?
a)
a solid metal
b)
a rock cantaining a metal combined with other elements
c)
an element
d)
an object used to row a boat
2.
What is the name of the positive electrode?
a)
cathode
b)
anode
3.
What is the name of the negative electrode?
a)
cathode
b)
anode
4.
The negatively charged ions migrate toward the ________.
a)
anode
b)
cathode
5.
The positively charged ions migrate toward the ________.
a)
anode
b)
cathode
6.
Which of these elements is unlikely to be found native?
a)
gold
b)
platinum
c)
aluminium
d)
silver
7.
What is the removal of oxygen from a substance called?
a)
reduction
b)
extraction
c)
electrolysis
d)
oxidation
8.
What is the addition of oxygen to a substance called?
a)
decomposition
b)
reduction
c)
oxidation
d)
extraction
9.
Which element cannot be extracted from its ore by reduction with carbon?
a)
iron
b)
aluminium
c)
copper
d)
lead
10.
Which series is used to predict the reactions of metals with carbon and other elements?
a)
reactionary series
b)
reaction series
c)
redox series
d)
reactivity series
11.
What is the name of the process that uses electricity to separate the elements in a compound?
a)
reduction
b)
electrolysis
c)
extraction
d)
mining
12.
How could you extract sodium from molten sodium chloride?
a)
reduction by carbon
b)
electrolysis
c)
decomposition
d)
oxidation
13.
What is the ore of aluminium called?
a)
Baxite
b)
Bauxite
c)
Cryolite
d)
Malachite
14.
The electrodes in electrolysis of aluminium are made of
a)
Steel
b)
Anodes
c)
Graphite
d)
Plastic
15.
What do you add to aluminium ore to reduce its melting temperature?
a)
Dendrite
b)
Malachite
c)
Bauxite
d)
Cryolite
100 %
