Chemistry Unit C1 Worksheet - Study And Revision Pack (Foundation Paper) Page 19
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34C1.4 Exam Questions – 26 marks, 26 minutes
Q1.
Metals
The pie chart shows the main uses of copper.
(a) Use the pie chart to give the biggest use for copper.
(1)
..............................................................................................................................................
(b) Copper can be extracted from a naturally occurring substance called malachite.
State the name given to naturally occurring substances from which metals are extracted.
(1)
..............................................................................................................................................
(c) Overhead power cables supported on pylons are used to carry electricity.
The table shows information about three metallic substances.
relative
relative
metallic
density / kg
cost per
relative
ability to
resistance
–3
substance
m
tonne / £
strength
conduct
to
electricity
corrosion
copper
8920
5279
high
very good
good
aluminium
2700
1425
high
good
good
steel
7820
505
very high
good
poor
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