AQA GCSE Chemistry 8462 · 4.9.1.1
The proportions of different gases in the atmosphere
- Code
- 4.9.1.1
- In
- 4.9.1 The composition and evolution of the Earth's atmosphere
- Topic
- 4.9 Chemistry of the atmosphere
- Course
- GCSE Chemistry 8462
- Board
- AQA
Grade boundaries·AQA command words
Codes and titles are read by a script from AQA's published specification and have not been checked by a person. What each point covers is in the specification itself: AQA’s specification.
Points in 4.9.1 The composition and evolution of the Earth's atmosphere
- 4.9.1.1 The proportions of different gases in the atmosphere
- 4.9.1.2 The Earth's early atmosphere
- 4.9.1.3 How oxygen increased
- 4.9.1.4 How carbon dioxide decreased