Properties and uses of some metals

2 marks · Hard

Copper is often used in building water pipes. Give two physical properties of copper, apart from electrical conductivity, that make it suitable for this use.

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Also accept: Copper is malleable and does not corrode easily.; Copper is strong and resists corrosion.; Copper does not react with water and is malleable.

Common mistakes: Stating electrical conductivity.; Stating general metallic properties without relation to use.

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Marking points

B1 · 1 mark · One correct property of copper relevant to pipes (e.g., malleable, does not corrode, unreactive with water, strong).

B2 · 1 mark · Second correct property, different from first.

Worked solution

Copper is malleable (can be bent or shaped) and does not corrode easily. These properties make it suitable for water pipes.