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5 marksUses of Metals

CSEC Chemistry · May/June 2016 · Paper 2 · Question 6(b)

An alloy can be described as a 'mixed metal solution'. Aluminium forms an alloy with magnesium that is used to make aircraft.

Identify this alloy and suggest why it is better to use it, rather than the pure metal, in the manufacture of aircraft.

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Other parts of this question

  1. 6(a)(i)Briefly describe the extraction of aluminium from its named ore. Include in your description ONE ionic equation.[5 marks]
  2. 6(a)(ii)Although aluminium ore is mined in the Caribbean, the extraction of aluminium usually takes place in other countries. Suggest ONE reason why it may be…[2 marks]
  3. 6(c)"Some metals can be useful to man but yet harmful to the environment." Comment on this statement with reference to mercury.[3 marks]

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