Corrosion of metals past paper questions

O Level Chemistry 5070 · Metals. 1 State the conditions required for the rusting of iron and steel to form hydrated iron(III) oxide 2 Describe how barrier methods prevent rusting by excluding oxygen or water 3 State some common barrier methods, including painting, greasing and coating with plastic 4 Explain sacrificial protection in terms of the reactivity series and in terms of electron loss 5 Describe the use of zinc in galvanising as an example of a barrier method and sacrificial protection

In Cambridge O Level Chemistry 5070, Corrosion of metals came up in 19 of the 72 papers on Paperstreak, for about 2 marks a paper when it does. It last came up in October/November 2025.

Often set with Formulae, Transition elements, The mole and the Avogadro constant, Electrolysis.

19 questions, newest first

5070/11/O/N/25 Question 26 · 1 mark
5070/12/O/N/25 Question 26 · 1 mark
5070/11/M/J/25 Question 27 · 1 mark
5070/22/M/J/25 Question 7 part (c) · 3 marks
5070/22/O/N/24 Question 2 part (d) · 3 marks
5070/11/O/N/23 Question 28 · 1 mark
5070/12/O/N/23 Question 28 · 1 mark
5070/22/O/N/23 Question 2 part (f(i)) · 2 marks
5070/11/M/J/23 Question 28 · 1 mark
5070/12/M/J/23 Question 31 · 1 mark
5070/42/M/J/23 Question 1 parts (b) (c) (d) (e) · 5 marks
5070/21/O/N/22 Question 9 parts (c(i)) (c(ii)) (c(iii)) · 4 marks
5070/22/M/J/22 Question 8 part (a) · 2 marks
5070/11/O/N/21 Question 33 · 1 mark
5070/12/O/N/21 Question 33 · 1 mark
5070/11/M/J/21 Question 32 · 1 mark
5070/12/M/J/21 Question 32 · 1 mark
5070/11/M/J/20 Question 29 · 1 mark
5070/12/M/J/20 Question 29 · 1 mark

More in Metals: Properties of metals, Uses of metals, Alloys and their properties, Reactivity series, Extraction of metals.

Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.