AQA GCSE science revision — what to cover and how to revise it

AQA GCSE science is one of the most widely taken sets of qualifications in England. Whether students are taking Trilogy Combined Science or Triple Science (separate Biology, Chemistry, and Physics), the specification is substantial and the exams reward students who can retrieve and apply knowledge — not just recognise it from notes.

AQA GCSE science structure

Combined Science: Trilogy

AQA Combined Science: Trilogy gives students two GCSEs. There are six papers in total — two Biology, two Chemistry, two Physics — each 1 hour 15 minutes. Papers can be Foundation or Higher tier.

Each paper covers roughly half of the science specification, split as follows:

• Biology papers 1 and 2 — cell biology, organisation, infection and response, bioenergetics (Paper 1); homeostasis, inheritance, variation, ecology (Paper 2)
• Chemistry papers 1 and 2 — atomic structure, bonding, quantitative chemistry, chemical changes, energy changes (Paper 1); rates, organic chemistry, chemical analysis, chemistry of the atmosphere, using resources (Paper 2)
• Physics papers 1 and 2 — energy, electricity, particle model, atomic structure (Paper 1); forces, waves, magnetism (Paper 2); space physics (Higher only, Paper 2)

Triple Science

AQA Triple Science gives three separate GCSEs. Each subject has two papers. The content is the same core material as Trilogy plus additional Higher-only topics and greater depth on several areas.

Required practicals

AQA includes required practicals across all three sciences. These can appear on any paper, not just as standalone questions. Students must understand the method, key variables, expected results, sources of error, and how to interpret results.

Common required practicals that frequently appear in exams:

• Biology: enzyme activity, microscopy, photosynthesis rates, osmosis, field investigations
• Chemistry: making salts, neutralisation, electrolysis, rates of reaction, chromatography
• Physics: specific heat capacity, resistance of wires, light refraction, waves in a ripple tank, force and extension

The practical questions often use command words like evaluate, suggest, and explain — which means retrieval of the method is not enough. Students need to be able to reason about what happens when something changes.

What the AQA exams reward

AQA exam questions tend to follow predictable patterns. Students who do well are not those who have read the most — they are those who have practised retrieving answers and applying concepts under exam conditions.

Key skills tested:

• Recall — definitions, units, equations, processes
• Application — using a concept to explain a new situation
• Analysis — interpreting a graph, table, or experimental result
• Evaluation — judging the quality of a method or conclusion
• Calculation — using the equation sheet correctly with the right rearrangement

The equation sheet is provided in Physics and Chemistry, but students still need to know which equation applies and how to rearrange it quickly. Practising calculations before the exam is much more effective than memorising the equation list.

AQA GCSE science revision by subject

Biology

Priority areas for AQA Biology revision:

• Cell biology — cell structures, mitosis, diffusion, osmosis, active transport
• Organisation — the heart, blood vessels, digestive enzymes
• Bioenergetics — photosynthesis equations and variables, aerobic and anaerobic respiration
• Homeostasis — blood glucose, the kidney, temperature regulation
• Inheritance — Punnett squares, genotype vs phenotype, sex determination
• Ecology — food chains, ecosystems, biodiversity

Chemistry

Priority areas for AQA Chemistry revision:

• Bonding — ionic, covalent, metallic; properties from structure
• Quantitative chemistry — moles, limiting reactants, concentration calculations
• Chemical changes — electrolysis, reactivity series, neutralisation
• Organic chemistry — alkanes, alkenes, polymers, addition reactions
• Rates — effect of temperature, concentration, surface area, catalysts; collision theory

Physics

Priority areas for AQA Physics revision:

• Energy — stores, transfers, efficiency, power
• Electricity — circuits, resistance, the relationship between V, I, and R
• Forces — Newton’s laws, resultant forces, momentum, stopping distances
• Waves — transverse and longitudinal, reflection, refraction, the EM spectrum
• Nuclear physics — radioactive decay, half-life, nuclear equations

How to revise AQA science effectively

Revision that works for AQA science uses retrieval rather than recognition. That means:

• answering past-paper questions before checking the mark scheme
• writing out processes from memory, then verifying against the specification
• practising calculations with numbers you have not seen before
• explaining required practicals to yourself without looking at notes

For the approach in detail, read the guide on active recall for GCSE science, and for spacing topics over time, see spaced repetition for GCSE science.

AQA specification and command words

Every exam question uses a command word that tells you what kind of answer is expected. The most important ones for AQA are:

• Describe — state what happens, without explanation
• Explain — give the reason, using the correct vocabulary
• Evaluate — weigh up evidence or a method and reach a conclusion
• Calculate — show your working and give units
• Predict — use what you know to say what will happen in a new situation

Students who know the difference between describe and explain avoid losing marks by writing too little or answering the wrong question. See the GCSE science command words guide for a full breakdown.

Studia and AQA science revision

Studia supports AQA GCSE science revision on iPhone and iPad. The app covers Biology, Chemistry, and Physics content aligned to the AQA specification and uses spaced repetition to schedule reviews at the right time before each paper. Students enter their exam dates, set confidence on each topic, and Studia builds the revision sequence.

For more on the app, read the GCSE science revision app guide.