Chemistry 0620 · 2 Atoms, elements and compounds
2.3 Isotopes
Define isotopes, use atomic/ionic symbols, explain why isotopes share chemical properties, and calculate relative atomic mass from isotopic abundances.
- Questions
- 212
- Years
- 2010–2026
- Multiple choice
- 105
- Written answer
- 107
- Average marks
- 5.7
Practise atoms, elements and compounds questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 2variants 21, 22, 2362
- Paper 1variants 11, 12, 1359
- Paper 3variants 31, 32, 3349
- Paper 4variants 41, 42, 4342
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | 4 | 6 | – | 10 |
| 2023 | 2 | 11 | 7 | 20 |
| 2022 | 3 | 11 | 5 | 19 |
| 2021 | 4 | 10 | 8 | 22 |
| 2020 | – | 5 | 7 | 12 |
| 2019 | 4 | 8 | 13 | 25 |
| 2018 | 1 | 10 | 9 | 20 |
| 2017 | 2 | 6 | 10 | 18 |
| 2016 | 3 | 13 | 7 | 23 |
| 2015 | 3 | 7 | 3 | 13 |
| 2014 | – | 4 | 3 | 7 |
| 2013 | – | 2 | 4 | 6 |
| 2012 | – | 3 | 3 | 6 |
| 2011 | – | 1 | 3 | 4 |
| 2010 | – | 3 | 4 | 7 |
