1 markImpact of Metals on Living Systems and the Environment

CSEC Chemistry · May/June 2014 · Paper 2 · Question 5(b)(ii)

Iron corrodes easily to form rust. Various methods prevent corrosion.

Why is painting effective in preventing iron from rusting?

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

5(a)(i)Write a balanced equation with state symbols for the reaction that occurs between zinc and the copper(II) sulfate solution.[2 marks]
5(a)(ii)Explain why the zinc foil reacted with the copper(II) sulfate solution but the silver foil did not.[4 marks]
5(a)(iii)Would aluminium displace copper from the copper(II) sulfate solution? Give a reason for your answer.[2 marks]
5(b)(i)List the conditions necessary for the corrosion of iron.[2 marks]
5(c)Explain why duralumin is used in preference to aluminium for the manufacture of aircraft.[4 marks]

More practice: the rest of this paper · more Impact of Metals on Living Systems and the Environment questions · all CSEC Chemistry past papers