Chemistry 5070 · 3 Stoichiometry
3.1 Formulae
Define molecular and empirical formulae, deduce chemical formulae, and construct balanced word, symbol, and ionic equations with state symbols.
- Questions
- 229
- Years
- 2004–2026
- Multiple choice
- 135
- Written answer
- 94
- Average marks
- 5
Where this subtopic appears
- Paper 1variants 01, 11, 12125
- Paper 4variants 04, 41, 4259
- Paper 2variants 02, 21, 2236
- Paper 3variants 03, 31, 329
Questions by year
| Year | May/June | Oct/Nov | Total |
|---|---|---|---|
| 2026 | 7 | – | 7 |
| 2023 | 6 | 10 | 16 |
| 2022 | 7 | 15 | 22 |
| 2021 | 7 | 5 | 12 |
| 2020 | 3 | 4 | 7 |
| 2019 | 11 | 9 | 20 |
| 2018 | 7 | 8 | 15 |
| 2017 | 6 | 4 | 10 |
| 2016 | 8 | 11 | 19 |
| 2015 | 6 | 6 | 12 |
| 2014 | 7 | 3 | 10 |
| 2013 | 2 | 4 | 6 |
| 2012 | 6 | 3 | 9 |
| 2011 | 2 | 1 | 3 |
| 2009 | 8 | 6 | 14 |
| 2008 | 4 | 8 | 12 |
| 2007 | 7 | 7 | 14 |
| 2006 | 5 | 5 | 10 |
| 2005 | 1 | 3 | 4 |
| 2004 | – | 7 | 7 |
