How to Revise for GCSE Chemistry
GCSE Chemistry blends recall (equations, tests, the periodic table) with applied calculations (moles, yields, concentrations). Treat it as two subjects and revise them differently.
A realistic weekly plan
- 2× 40-minute content sessions (atomic structure, bonding, reactions…).
- 1× 45-minute calculation drill (moles, Mr, percentage yield).
- 1× 30-minute required-practical or ion-test review.
- 1× 20-minute equation recall (balancing, state symbols, half-equations).
Techniques that actually work
Build a one-page periodic table reference
Group 1, 7, and 0 trends; transition metal properties; metals vs non-metals. Re-draw it from memory weekly.
Drill the maths separately
Moles, Mr, concentration, and percentage yield questions are formulaic. Do 10 of each in a row — speed and accuracy matter under exam pressure.
Learn the tests by heart
Flame tests, halide tests, gas tests (H₂, O₂, CO₂, Cl₂, NH₃) — these are almost guaranteed marks. Make a flashcard deck.
Common pitfalls to avoid
- Forgetting state symbols in equations — costs easy marks.
- Mixing up ionic and covalent properties.
- Rushing mole calculations without writing units.
Resources to use right now
Frequently asked questions
Which Chemistry topics are most exam-heavy?
Atomic structure, bonding, quantitative chemistry (moles), and rates of reaction appear on almost every paper. Prioritise these in the final 4 weeks.
How do I remember the reactivity series?
Use a mnemonic (e.g. ‘Please Stop Calling Me A Careless Zebra Instead Try Learning How Copper Saves Gold’). Then practise displacement reaction questions to apply it.
Is the periodic table given in the exam?
Yes — but only the basic version. You still need to know group trends, electron configurations, and reactivity patterns from memory.