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10.3 Using materials

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Question 3
H

An iron nail is placed in a test tube of water that has been boiled. A layer of oil is poured on top of the water. The nail does not rust. Why not?

[1]
A

The oil layer stops air dissolving back into the boiled water

B

The oil layer stops the water touching the surface of the nail

C

Boiling removes all of the dissolved salts from the water used

D

Boiling turns the water into a gas that cannot react with iron

Markscheme

10.3 Using materials Questions

  1. GCSE
  2. /Chemistry
  3. /10.3 Using materials

40 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.

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