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9.2 Carbon dioxide and methane as greenhouse gases

9.2 Carbon dioxide and methane as greenhouse gases

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Question 2

Carbon dioxide is a major greenhouse gas in the Earth's atmosphere.

a.

State how greenhouse gases help to maintain temperatures on Earth at a level that supports life.

[2]
b.

The average percentage by mass of carbon dioxide in a specific sample of air is 0.08%0.08\%0.08%. Calculate the mass of carbon dioxide in 250 kg250\text{ kg}250 kg of this air. Give your answer in grams.

[2]
Markscheme

9.2 Carbon dioxide and methane as greenhouse gases Questions

  1. GCSE
  2. /Chemistry
  3. /9.2 Carbon dioxide and methane as greenhouse gases

13 exam-style questions on AQA GCSE Chemistry 9.2 Carbon dioxide and methane as greenhouse gases, covering 9.2.1 Greenhouse gases, 9.2.2 Human activities which contribute to an increase in greenhouse gases in the atmosphere, 9.2.3 Global climate change, and 9.2.4 The carbon footprint and its reduction. Each one has a worked solution and a mark scheme showing where the marks go.

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