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9.1 The composition and evolution of the Earth's atmosphere

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Question 14

A fossil fuel is extracted from an underground deposit. Scientists determine that the carbon in the fuel was once in carbon dioxide in the atmosphere.

Explain how the carbon dioxide could have become trapped in the fuel and predict what happens to this carbon when the fuel is burned.

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9.1 The composition and evolution of the Earth's atmosphere Questions

  1. GCSE
  2. /Chemistry
  3. /9.1 The composition and evolution of the Earth's atmosphere

79 exam-style questions on AQA GCSE Chemistry 9.1 The composition and evolution of the Earth's atmosphere, covering 9.1.1 The proportions of different gases in the atmosphere, 9.1.2 The Earth's early atmosphere, 9.1.3 How oxygen increased, and 9.1.4 How carbon dioxide decreased. Each one has a worked solution and a mark scheme showing where the marks go.

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