AtmosphereLow Exam FrequencyAQA

Composition of Atmosphere

Revise Composition of Atmosphere in Atmosphere for GCSE Chemistry with 20 exam-style questions and 12 flashcards. This topic appears less often, but it can still pick up marks when it appears in mixed-topic papers.

Sample Flashcards

How was oxygen added to the atmosphere?
Photosynthesis by plants and algae
What percentage of the atmosphere is CO₂?
About 0.04%

Sample Questions

What is the approximate percentage of nitrogen in the current atmosphere?

  • A. 21%
  • B. 0.04%
  • C. 78%
  • D. 50%
1 markfoundation

Describe how Earth's early atmosphere was formed.

3 marksstandard

20

exam-style questions

12

revision flashcards

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