Chemistry 0620 · 7 Acids, bases and salts
7.2 Oxides
Classify oxides as acidic, basic, or amphoteric, and describe their reactions with acids and bases.
- Questions
- 323
- Years
- 2010–2026
- Multiple choice
- 267
- Written answer
- 56
- Average marks
- 2.4
Practise acids, bases and salts questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 13153
- Paper 2variants 21, 22, 23127
- Paper 3variants 31, 32, 3326
- Paper 4variants 41, 42, 4315
- Paper 6variants 61, 622
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 4 | 6 | – | 10 |
| 2023 | 2 | 9 | 7 | 18 |
| 2022 | 3 | 20 | 14 | 37 |
| 2021 | 6 | 16 | 17 | 39 |
| 2020 | – | 19 | 11 | 30 |
| 2019 | 5 | 19 | 21 | 45 |
| 2018 | 3 | 13 | 12 | 28 |
| 2017 | 4 | 16 | 14 | 34 |
| 2016 | 4 | 17 | 10 | 31 |
| 2015 | 3 | 9 | 7 | 19 |
| 2014 | – | 5 | 5 | 10 |
| 2013 | – | 2 | 5 | 7 |
| 2012 | – | 3 | 1 | 4 |
| 2011 | – | 2 | 1 | 3 |
| 2010 | – | 3 | 5 | 8 |
