Uses of Metals (Cambridge (CIE) IGCSE Combined Science): Revision Note
Exam code: 0653
Uses of metals
What is aluminium used for?
Aluminium is a reactive metal
Aluminium is widely used because it has a low density and is resistant to corrosion
It forms a thin protective layer of aluminium oxide on its surface, which prevents further corrosion
Uses of aluminium
Use | Property |
|---|---|
aeroplane bodies | high strength-to-weight ratio, low density |
overhead power cables | good electrical conductor, low density |
food cans | non-toxic, resistant to corrosion and acidic foods |
What is copper used for?
Copper is an unreactive metal
Copper is widely used because it is a very good electrical conductor and is ductile
This means it can carry electrical current efficiently and be drawn into thin wires
Copper is usually the metal inside electrical wires due to it's high conductivity
Uses of copper
Use | Property |
electrical wiring | very good conductor of electricity and ductile |
pots and pans | very good conductor of heat, unreactive, malleable |
water pipes | non-toxic, unreactive (does not react with water) and malleable |
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