Uses of aluminium
3 marks · EasyAluminium is widely used for outdoor electrical wiring and food packaging.
Give one property of aluminium that makes it suitable for outdoor electrical wiring.
Give one property that makes aluminium suitable for packaging food.
Explain, with a reason, how the properties of aluminium relate to its use in these cases.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) Good conductor of electricity.
(b) Resistant to corrosion or forms a protective oxide layer.
(c) Wires need to conduct electricity efficiently; packaging must not rust or react with food. · must show Relates property to use
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · States an appropriate property for electrical use (e.g., good conductor of electricity).
B2 (b) · 1 mark · States an appropriate property for food packaging (e.g., resists corrosion; does not react with food).
B3 (c) · 1 mark · Relates the property to the specific use for both cases.
Worked solution
a) Good electrical conductor.
b) Resistant to corrosion.
c) Wires must conduct electricity; packaging must not react with or spoil food.