Combined Science GCSE
Oxygen as the second most abundant atmospheric gas
What Oxygen as the second most abundant atmospheric gas means in Combined Science GCSE, as defined for AQA.
Definition of Oxygen as the second most abundant atmospheric gas
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Reference: AQA
Oxygen is the second most abundant gas in the modern atmosphere, making up about one-fifth of dry air, while nitrogen is the most abundant at about four-fifths.
Topics that use Oxygen as the second most abundant atmospheric gas
Related terms
- Proportions of gases by volume
- Proportions of nitrogen and oxygen
- Trace gases and variability
- Using fractions and percentages to describe mixtures
- Variation and approximate nature of atmospheric data
- Atmospheric composition
- Composition of the atmosphere
- Composition of the atmosphere as a mixture
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