3 marksImpact of Metals on Living Systems and the Environment

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

"Some metals can be useful to man but yet harmful to the environment." Comment on this statement with reference to mercury.

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6(a)(i)Briefly describe the extraction of aluminium from its named ore. Include in your description ONE ionic equation.[5 marks]
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]
6(b)Identify this alloy and suggest why it is better to use it, rather than the pure metal, in the manufacture of aircraft.[5 marks]

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