AQA GCSE Chemistry · Topic 9
26 cards on Chemistry of the Atmosphere, every one written against a numbered point in section 4.9 of the AQA Chemistry spec. Here’s what the topic covers, and 3 cards to try.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.9.1 · Evolution of the Atmosphere
About 80% (four-fifths) nitrogen, about 20% (one-fifth) oxygen, and small amounts of other gases including carbon dioxide, water vapour and noble gases. Roughly the same for 200 million years.
4.9.2.1–4.9.2.2 · Greenhouse Gases
Water vapour, carbon dioxide and methane.
4.9.2.3–4.9.2.4 · Climate Change & Carbon Footprint
Every part of section 4.9 of the AQA spec, and how many cards cover it.
Launching November 2026
revolve. shows you each Chemistry of the Atmosphere card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.