Chemistry 5070 · 12 Experimental techniques and chemical analysis
12.4 Separation and purification
Describe separation techniques including filtration, crystallisation, and distillation, and assess substance purity using melting and boiling points.
- Questions
- 116
- Years
- 2004–2026
- Multiple choice
- 62
- Written answer
- 54
- Average marks
- 4.4
Practise experimental techniques and chemical analysis questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 4variants 04, 41, 4259
- Paper 1variants 01, 11, 1248
- Paper 2variants 02, 218
- Paper 3variants 031
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 3 | – | 3 |
| 2023 | 1 | – | 1 |
| 2022 | 4 | 3 | 7 |
| 2021 | 7 | 7 | 14 |
| 2020 | 7 | 1 | 8 |
| 2019 | 2 | 5 | 7 |
| 2018 | 7 | 1 | 8 |
| 2017 | 3 | 4 | 7 |
| 2016 | 4 | 4 | 8 |
| 2015 | 2 | 2 | 4 |
| 2014 | 3 | 2 | 5 |
| 2013 | – | 1 | 1 |
| 2012 | 2 | 5 | 7 |
| 2011 | 2 | 3 | 5 |
| 2009 | 1 | 2 | 3 |
| 2008 | 4 | 3 | 7 |
| 2007 | 3 | 1 | 4 |
| 2006 | 5 | – | 5 |
| 2005 | 2 | 2 | 4 |
| 2004 | – | 8 | 8 |
