When an iron nail is exposed to oxygen and water, it corrodes to form an orange-brown layer of rust (hydrated iron(III) oxide).
What chemical change happens to the iron atoms during this process?
The iron is reduced
The iron is neutralised
The iron is oxidised
The iron is thermally decomposed
Practise Edexcel GCSE Chemistry Transition metals, alloys and corrosion with exam-style questions for Foundation and Higher tier. 97 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
