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8.2 Identification of common gases

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Question 24
H

A student describes the test for carbon dioxide as: add limewater and it goes cloudy. The mark for describing the test is not awarded. Which reason explains why?

[1]
A

The word cloudy cannot be used in place of milky.

B

Limewater has to be called calcium carbonate solution.

C

The answer does not say the gas is bubbled through or shaken.

D

The answer does not give the colour of the limewater.

Markscheme

8.2 Identification of common gases Questions

  1. GCSE
  2. /Chemistry
  3. /8.2 Identification of common gases

40 exam-style questions on AQA GCSE Chemistry 8.2 Identification of common gases, covering 8.2.1 Test for hydrogen, 8.2.2 Test for oxygen, 8.2.3 Test for carbon dioxide, and 8.2.4 Test for chlorine. Each one has a worked solution and a mark scheme showing where the marks go.

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