Chemical energetics · Cambridge O Level 5070
5.1 Exothermic and endothermic reactions
5.1 Exothermic and endothermic reactions appeared in 6 of the 6 years from 2020–2025, worth 528 marks across 81 questions — about 6.52 marks each.
Based on 95 real Cambridge past papers, 2020–2025.
Questions per year
How many Chemistry questions tagged to this topic appeared each year.
- 20209
- 20219
- 202217
- 202314
- 202415
- 202517
Appearance history
- Most recent
- 2025
- First in range
- 2020
- Years since last
- 0
- Longest gap
- 0 years
Historical occurrence only — not an exam prediction.
Related topics
Topics that most often share a question with this one.
Practise this topic
Drill 5.1 Exothermic and endothermic reactions with real Cambridge O Level Chemistry questions and their official marking schemes, or generate a fresh worksheet on it in seconds.