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4 marksMetals, Non-Metals and Corrosion

CSEC Integrated Science · May/June 2011 · Paper 2 · Question 6(d)

A family builds a home very near the beach, and the contractor advises painting the iron window frames promptly.

Explain why the contractor advised painting the iron windows as soon as possible.

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Other parts of this question

  1. 6(a)(i)Describe and compare the reaction of aluminium with dilute sulphuric acid.[2 marks]
  2. 6(a)(ii)Describe and compare the reaction of iron with dilute sulphuric acid.[2 marks]
  3. 6(a)(iii)Describe and compare the reaction of copper with dilute sulphuric acid.[1 mark]
  4. 6(b)Suggest TWO safety precautions to follow when reacting aluminium with sulphuric acid, providing a reason for each precaution.[4 marks]
  5. 6(c)Explain why it is dangerous to react sodium and potassium with dilute sulphuric acid.[2 marks]

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