Chemistry 9701 · 13 An introduction to AS Level organic chemistry
13.4 Isomerism: structural isomerism and stereoisomerism
Describe structural, geometrical (cis/trans), and optical isomerism, identifying chiral centers and predicting isomers.
- Questions
- 256
- Years
- 2015–2026
- Multiple choice
- 181
- Written answer
- 75
- Average marks
- 4.5
Practise an introduction to as level organic chemistry questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 13, 14181
- Paper 2variants 21, 22, 2345
- Paper 4variants 41, 42, 4330
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 15 | – | 15 |
| 2023 | 3 | 16 | 7 | 26 |
| 2022 | 2 | 12 | 13 | 27 |
| 2021 | 2 | 7 | 15 | 24 |
| 2020 | 2 | 13 | 13 | 28 |
| 2019 | 5 | 13 | 6 | 24 |
| 2018 | 3 | 15 | 8 | 26 |
| 2017 | 3 | 20 | 8 | 31 |
| 2016 | 4 | 10 | 15 | 29 |
| 2015 | – | 14 | 12 | 26 |
