OCR GCSE Twenty First Century Science Suite - Combined Science B J260 · C1.1
How has the Earth’s atmosphere changed over time, and why?
- Code
- C1.1
- In
- C1 Air and water
- Course
- GCSE Twenty First Century Science Suite - Combined Science B J260
- Board
- OCR
Grade boundaries·OCR command words
Codes and titles are read by a script from OCR's published specification and have not been checked by a person. What each point covers is in the specification itself: OCR’s specification.
Points under C1.1
- C1.1.1 The particle model and changes of state
- C1.1.2 Limitations of the particle model
- C1.1.3 Forces between particles and changes of state
- C1.1.4 Predicting states from data
- C1.1.5 Formation of the early atmosphere
- C1.1.6 Development of an oxygen-rich atmosphere
- C1.1.7 Sources of atmospheric pollutants
- C1.1.8 Problems of pollutants and reducing emissions
- C1.1.9 Formulae of elements and covalent compounds
- C1.1.10 Formulae and balanced equations
- C1.1.11 Arithmetic and ratio in balancing equations
- C1.1.12 Tests for oxygen, hydrogen and carbon dioxide
- C1.1.13 Oxidation as gain of oxygen
Points in C1 Air and water
- C1.1 How has the Earth’s atmosphere changed over time, and why?
- C1.2 Why are there temperature changes in chemical reactions?
- C1.3 What is the evidence for climate change, why is it occurring?
- C1.4 How can scientists help improve the supply of potable water?