Chemistry GCSE
Absence of oxygen
What Absence of oxygen means in Chemistry GCSE, as defined for AQA.
Definition of Absence of oxygen
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Reference: AQA
There was little or no oxygen gas in the early atmosphere, and the atmospheres of Mars and Venus today contain almost no oxygen.
Topics that use Absence of oxygen
- The Earth's early atmosphere (AQA GCSE)
Related terms
- Build-up of nitrogen in the atmosphere
- Comparison with Mars and Venus
- Composition of the early atmosphere
- Condensation and the formation of oceans
- Development of scientific theories
- Earth's early atmosphere
- Earth’s first billion years
- Evidence and revision
Using Absence of oxygen in the exam
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