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9.2 Earth and atmospheric science

9.2 Earth and atmospheric science

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Question 14

During the first billion years of the Earth's existence, intense volcanic activity released gases that formed the early atmosphere.

Which gas is believed to have made up the largest percentage of this early atmosphere?

A

Oxygen

B

Carbon dioxide

C

Nitrogen

D

Argon

Markscheme

9.2 Earth and atmospheric science Questions

  1. GCSE
  2. /Chemistry
  3. /9.2 Earth and atmospheric science

97 exam-style questions on Edexcel GCSE Chemistry 9.2 Earth and atmospheric science, covering 9.2.1 The Earth's early atmosphere, 9.2.2 How the atmosphere evolved, 9.2.3 Chemical test for oxygen, and 9.2.4 The greenhouse effect and climate change. Each one has a worked solution and a mark scheme showing where the marks go.

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