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4.2 Identifying the products of chemical reactions

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Question 20

A student collects a gas given off in a reaction. The student tests a tube of the gas and a tube of air in the same way, using a glowing splint.

SampleObservation
Gas from the reactionThe glowing splint relights.
AirThe glowing splint does not relight.

Using the results, identify the gas and explain how the comparison with air supports your answer.

[2]
Markscheme

4.2 Identifying the products of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Identifying the products of chemical reactions

107 exam-style questions on OCR GCSE Chemistry 4.2 Identifying the products of chemical reactions, covering 4.2.1 Tests to identify gases, 4.2.2 Tests for aqueous ions and flame tests, and 4.2.3 Instrumental methods of analysis. Each one has a worked solution and a mark scheme showing where the marks go.

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