Chemical energetics · Cambridge IGCSE 0653
C5.1 Exothermic and endothermic reactions
C5.1 Exothermic and endothermic reactions appeared in 6 of the 6 years from 2020–2025, worth 675 marks across 130 questions — about 5.19 marks each.
Based on 220 real Cambridge past papers, 2020–2025.
Questions per year
How many Combined Science questions tagged to this topic appeared each year.
- 202019
- 202117
- 202224
- 202323
- 202425
- 202522
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.
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