Experimental techniques and chemical analysis · Cambridge O Level 5070
12.5 Identification of ions and gases
12.5 Identification of ions and gases appeared in 6 of the 6 years from 2020–2025, worth 1060 marks across 108 questions — about 9.81 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.
- 202019
- 202126
- 202218
- 202314
- 202415
- 202516
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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