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3 marksImpact of Metals on Living Systems and the Environment

CSEC Chemistry · May/June 2012 · Paper 2 · Question 5(a)

Most metals undergo corrosion. In the case of aluminium, this can be beneficial to the metal while in the case of iron, it may be harmful and quite costly.

State the property of metals that is responsible for corrosion and describe the process of corrosion.

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Other parts of this question

  1. 5(b)Write THREE relevant chemical equations for the corrosion of iron.[3 marks]
  2. 5(c)Explain why the corrosion of aluminium is beneficial while that of iron is not. In your answer, you should refer to the products of corrosion and their…[7 marks]
  3. 5(d)Aluminium is widely used to make cookware. Explain why it is NOT advisable to use aluminium pots to prepare acidic foods.[2 marks]

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