Chemistry 5070 · 10 Chemistry of the environment
10.1 Water
Describe chemical tests for water, purity testing, water treatment processes, and identify beneficial and harmful substances in natural water sources.
- Questions
- 40
- Years
- 2004–2023
- Multiple choice
- 29
- Written answer
- 11
- Average marks
- 2.7
Practise chemistry of the environment questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 01, 11, 1228
- Paper 2variants 02, 21, 228
- Paper 4variants 41, 424
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2023 | 3 | 4 | 7 |
| 2022 | 1 | 1 | 2 |
| 2021 | – | 1 | 1 |
| 2020 | 2 | 2 | 4 |
| 2019 | 4 | 1 | 5 |
| 2018 | 3 | 1 | 4 |
| 2017 | – | 2 | 2 |
| 2016 | 1 | 1 | 2 |
| 2015 | – | 1 | 1 |
| 2012 | – | 1 | 1 |
| 2011 | – | 2 | 2 |
| 2009 | 1 | – | 1 |
| 2008 | 1 | 1 | 2 |
| 2007 | 1 | 1 | 2 |
| 2006 | 1 | 1 | 2 |
| 2005 | – | 1 | 1 |
| 2004 | – | 1 | 1 |
