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8.2 Identification of common gases

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Question 6

A laboratory technician collects a gas sample from a storage vessel in a test tube. The sample may contain hydrogen or oxygen. The technician puts a glowing splint into the sample. The splint does not relight. Why does this result not rule out hydrogen?

[1]
A

A burning splint, not a glowing splint, is needed to test for hydrogen.

B

Hydrogen must first be mixed with oxygen inside the test tube.

C

Hydrogen should make a glowing splint change colour rather than relight.

D

Hydrogen should relight a glowing splint after a short delay.

Markscheme

8.2 Identification of common gases Questions

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

89 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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