Chemistry 0620 · 6 Chemical reactions
6.1 Physical and chemical changes
Identify physical and chemical changes and describe the key differences between them.
- Questions
- 95
- Years
- 2011–2026
- Multiple choice
- 87
- Written answer
- 8
- Average marks
- 1.7
Practise chemical reactions questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 1361
- Paper 2variants 21, 22, 2329
- Paper 3variants 31, 334
- Paper 4variants 421
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 1 | 3 | – | 4 |
| 2023 | 1 | 4 | 3 | 8 |
| 2022 | 1 | 13 | 4 | 18 |
| 2021 | 1 | 5 | 2 | 8 |
| 2020 | – | 8 | 4 | 12 |
| 2019 | 1 | 3 | 10 | 14 |
| 2018 | – | 3 | 3 | 6 |
| 2017 | 2 | 7 | 2 | 11 |
| 2016 | – | 2 | 2 | 4 |
| 2015 | – | 1 | – | 1 |
| 2013 | – | 3 | 2 | 5 |
| 2012 | – | – | 2 | 2 |
| 2011 | – | – | 2 | 2 |
