How to revise for GCSE Science (combined and separate)
TutorAura guide · Updated
GCSE Science (combined or separate biology, chemistry and physics) tests three things: knowledge of a lot of content, calculations using equations, and applying ideas to practicals and unfamiliar contexts, including longer 6-mark questions. Revise each in a different way. Combined science is worth two GCSEs; separate sciences are three.
Key takeaways
- Use active recall for content, not rereading.
- Practise every type of calculation until it's routine.
- Know the method and analysis for each required practical.
- Plan 6-mark answers as a logical sequence.
Learning the content
Turn each topic into questions and test yourself: flashcards for definitions and facts, blank-page recall for processes (photosynthesis, the heart, electrolysis). Space reviews over weeks. Testing yourself and spacing are among the most effective study techniques (Dunlosky et al., 2013). Try our flashcard maker.
Calculations and equations
Physics and chemistry calculations are reliable marks once practised:
- Write the equation.
- Convert units first.
- Substitute, rearrange, calculate.
- Give the unit and sensible significant figures.
GCSE science students in England are given an equations sheet in exams through at least 2027, but you still need to choose and rearrange the right equation. See how to study physics and how to study chemistry.
Required practicals
Exam questions ask about the method, variables, risks and how to analyse the results of the required practicals in your specification. For each one, know: the aim, the independent, dependent and control variables, the method in steps, how to make it accurate and repeatable, and how to process the results.
6-mark questions
- Read the command word: describe, explain, evaluate, compare.
- Plan quickly: list the points in a logical order.
- Use scientific terms correctly.
- For "evaluate", give both sides and a conclusion.
Practise against mark schemes; marks go to the quality and sequence of points, not length.
A weekly routine
| Day | Focus |
|---|---|
| Mon | Biology: flashcards and one exam question |
| Tue | Physics: calculation practice |
| Wed | Chemistry: blank-page recall of a topic |
| Thu | A required practical: method and analysis |
| Fri | One 6-mark question per science |
| Weekend | A timed past paper section, marked |
See GCSE chemistry revision and plan the weeks with the revision timetable generator.
Command words
| Command word | What to do |
|---|---|
| State / give | A short answer, no explanation |
| Describe | Say what happens, step by step |
| Explain | Say why or how, linking cause and effect |
| Compare | Similarities and differences, side by side |
| Evaluate | Give both sides, then a judgement |
| Calculate | Show working and give a unit |
Many lost marks come from describing when the question says explain. Underline the command word before you start.
Combined or separate science?
Combined science covers biology, chemistry and physics and is worth two GCSEs, graded on a 17-point scale from 9-9 to 1-1. Separate (triple) science gives three GCSEs and covers some extra content in each subject. Both can lead to science A levels, though some sixth forms ask for particular grades. If you're unsure, ask your science teacher.
Using exam questions well
Past paper questions are the best way to find out what you can actually do. After each one, mark it against the mark scheme and note why any mark was lost: missing a key term, an incomplete explanation, a calculation error or a misread question. Over a few weeks, patterns appear. Keep a short list of these "mark-losers" and check it before each exam. Our flashcard maker is useful for the key terms mark schemes look for.
Frequently asked questions
Do I need to memorise the equations?
For exams through at least 2027, an equation sheet is provided, but you still need to recognise which equation to use and rearrange it. Practise until choosing the equation is automatic.
How do you revise for GCSE Science fast?
Prioritise active recall on the topics you're weakest in, practise calculations every day, and do past paper questions marked against the mark scheme. Use short, spaced sessions rather than long cramming.
Sources
- Improving Students' Learning With Effective Learning Techniques. Psychological Science in the Public Interest (Dunlosky et al.), 2013.
- Update: GCSE Maths and GCSE Sciences formulae and equation sheets for 2026-2027. AQA.
- GCSE new grading scale: factsheets. GOV.UK.
Keep reading
How to revise for GCSE Chemistry
Calculations, equations, reactions and practicals, with a method for each.
How to study biology: learn the words, link the ideas, test yourself
Learn key terms with word roots, explain processes as sequences, link ideas with concept maps, and test yourself.
How to study physics: learn the principles, then a problem routine
Understand the principle behind each equation, use the same problem routine every time, check units, and practise mixed problems.
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