Every AQA GCSE Chemistry past paper, mark scheme, examiner report, topic breakdown, worked example, and revision plan — all on one page.
Specification · 8462
You will sit two papers, each 1 hour 45 minutes and worth 100 marks. Paper 1 covers Topics 1–5: atomic structure, bonding, quantitative chemistry, chemical changes, energy changes. Paper 2 covers Topics 6–10: rate & extent of chemical change, organic chemistry, chemical analysis, atmosphere, using resources. Each paper includes recall, application, and a "Required Practical" section — 8 practicals across the course feature in either paper. Higher tier (grades 4–9) and Foundation tier (grades 1–5) are available; schools enter you based on year-10 attainment.
Paper structure
Two papers · 100 marks each · 1h 45m each · Available at Higher (grades 4-9) and Foundation (grades 1-5) tiers · Paper 1 covers Topics 1-5, Paper 2 covers Topics 6-10
Awarded by
Assessment and Qualifications Alliance. Exam code 8462. Specification page: AQA GCSE Chemistry.
Past papers · AQA GCSE Chemistry
Below is the official series of AQA GCSE Chemistry past papers from 2018 onward. Each paper, mark scheme, and examiner report is free to download from the AQA assessment-resources hub. Open the AQA hub →
| Year | Paper | Tier | Duration | Marks | Download |
|---|---|---|---|---|---|
| 2024 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → | |
| Paper 1 | Foundation | 1h 45m | 100 | AQA hub → | |
| Paper 2 | Foundation | 1h 45m | 100 | AQA hub → | |
| 2023 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → | |
| Paper 1 | Foundation | 1h 45m | 100 | AQA hub → | |
| Paper 2 | Foundation | 1h 45m | 100 | AQA hub → | |
| 2022 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → | |
| Paper 1 | Foundation | 1h 45m | 100 | AQA hub → | |
| Paper 2 | Foundation | 1h 45m | 100 | AQA hub → | |
| 2021 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → | |
| 2020 | — | — | — | — | AQA hub → |
| 2019 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → | |
| 2018 | Paper 1 | Higher | 1h 45m | 100 | AQA hub → |
| Paper 2 | Higher | 1h 45m | 100 | AQA hub → |
Topics · full specification
Each topic links to a deeper revision guide. The mark allocation column shows roughly how many marks per paper that topic typically attracts.
Models of the atom (Dalton, Thomson, Rutherford, Bohr), isotopes, electronic configuration, periodic trends, alkali metals, halogens, noble gases, transition metals (Higher only).
Ionic, covalent, metallic bonding. Giant ionic lattices, simple molecules, giant covalent (diamond, graphite, silica), metals & alloys, polymers, nanoparticles.
Conservation of mass, relative formula mass, moles (Higher only), concentration of solutions, reacting masses, percentage yield, atom economy.
Acids & bases, pH scale, neutralisation, strong vs weak acids (Higher only), reactivity series, redox reactions, electrolysis.
Exothermic & endothermic reactions, reaction profiles, bond energy calculations (Higher only), cells & batteries, fuel cells.
Factors affecting rate (concentration, temperature, surface area, catalyst), collision theory, reversible reactions, dynamic equilibrium, Le Chatelier's principle (Higher only).
Crude oil & hydrocarbons, alkanes & alkenes, combustion, cracking, alcohols (Higher), carboxylic acids (Higher), polymers (addition & condensation, Higher).
Pure substances, formulations, chromatography (Rf values), tests for gases, tests for cations & anions, flame tests, instrumental methods (overview).
Earth's early atmosphere, evolution of the atmosphere, greenhouse gases & climate change, atmospheric pollutants.
Finite vs renewable resources, potable water, life-cycle assessments (LCA), corrosion, alloys, ceramics, polymers, composites, Haber process, NPK fertilisers (Higher).
Assessment objectives
Examiners award marks against three Assessment Objectives. Knowing the split helps you target practice — most students under-prepare for AO3.
Demonstrate knowledge and understanding
Recall facts, terminology, scientific procedures, equipment use.
Apply knowledge and understanding
Use knowledge in unfamiliar contexts, including practical situations.
Analyse information and ideas
Interpret data, evaluate methods, draw evidence-based conclusions.
Worked examples · step by step
Each worked example shows the full mark-scheme path. Steps map to where examiners typically award method (M) and accuracy (A) marks.
Question. Calculate the mass of magnesium oxide formed when 4.8 g of magnesium burns completely in oxygen. Relative atomic masses: Mg = 24, O = 16.
Answer 8.0 g of magnesium oxide.
Examiner tip. AQA mark schemes give 1 mark for the balanced equation, 1 for moles of reactant, 1 for the correct ratio, 1 for the final mass. Don't skip steps.
Question. Calculate the energy change for the reaction: H₂(g) + Cl₂(g) → 2HCl(g). Bond energies: H–H = 436, Cl–Cl = 242, H–Cl = 432 kJ/mol.
Answer ΔH = −186 kJ/mol (exothermic).
Examiner tip. Negative answer = exothermic, positive = endothermic. Always state the sign and the type. AQA expects both for the final mark.
Question. Write the half-equation for the reaction at the cathode during the electrolysis of molten lead bromide (PbBr₂).
Answer Pb²⁺ + 2e⁻ → Pb
Examiner tip. Cathode = reduction = gain of electrons (always). Anode = oxidation = loss of electrons. Remember "OIL RIG" — Oxidation Is Loss, Reduction Is Gain.
Examiner-report distilled
Pulled from AQA’s own examiner reports across recent series. Each one costs marks. Each one is fixable.
Mistake 1
Confusing "ionic" with "covalent" in dot-and-cross diagrams (transferred vs shared electrons).
Fix. Ionic = arrows between atoms showing transfer + brackets with charges. Covalent = overlap zone showing shared pair, no charges.
Mistake 2
Forgetting to balance electrons in half-equations for electrolysis.
Fix. Write each half-equation, balance atoms first, then add electrons to balance charge.
Mistake 3
Calculating atom economy as "moles of useful product / moles of all products" instead of using formula masses.
Fix. Atom economy = (Mr of desired product / total Mr of all products) × 100. Always Mr, never moles.
Mistake 4
Confusing rate of reaction units. Saying "5 cm³ per minute" when the answer should be in mol/dm³/s for a concentration-based question.
Fix. Read the question for the rate unit it wants and stick to it. Most rate questions use cm³/s for gas or g/s for mass.
Mistake 5
Applying Le Chatelier without identifying the forward/reverse direction first.
Fix. For each change, state (a) what the change is, (b) which direction the equilibrium shifts, (c) what that does to product yield.
Mistake 6
Writing "the reaction is exothermic because energy is released" without referencing bond breaking/forming.
Fix. Exothermic: more energy released forming new bonds than absorbed breaking old bonds. Always reference bond energies.
Formulae · memorise or know-where-to-find
Some are on the equation sheet; some are not. Highlighted ones are the ones examiners report as most often forgotten in exam pressure.
| Name | Expression | When to use |
|---|---|---|
| Moles (mass) | n = m / Mr | Converting between mass and moles. |
| Moles (gas, RTP) | n = V / 24 (V in dm³) | Converting gas volume at room temperature & pressure to moles. |
| Concentration | c = n / V | Solution concentration in mol/dm³ (V in dm³). |
| Atom economy | AE = (Mr useful product / total Mr products) × 100 | Comparing efficiency of reactions. |
| Percentage yield | % yield = (actual / theoretical) × 100 | Comparing real output to predicted. |
| Energy change (bond energies) | ΔH = Σ(bonds broken) − Σ(bonds formed) | Endo/exothermic calculations from bond data. |
Grade boundaries · most recent series
Indicative boundaries from the most recent published series. Boundaries shift slightly year to year. Open the grade-boundary calculator →
| Tier | Grade | Marks | % of total |
|---|---|---|---|
| Higher | 9 | 159 | 79.5% |
| Higher | 7 | 119 | 59.5% |
| Higher | 4 | 49 | 24.5% |
| Foundation | 5 | 134 | 67% |
| Foundation | 4 | 107 | 53.5% |
| Foundation | 1 | 19 | 9.5% |
Revision plan · 8 weeks to exam
A staged sequence designed by examiners, not motivational posters. Each block has a single focus and a single measurable outcome.
Weeks 8–6 before paper 1
Topics 1–5: Atomic structure, bonding, quantitative chemistry, chemical changes, energy changes. Heavy on moles + electrolysis.
Outcome. Paper 1 confidence.
Weeks 6–4
Topics 6–10: rate, organic, analysis, atmosphere, resources. Drill required practicals.
Outcome. Paper 2 confidence.
Weeks 4–2
Required practicals deep dive — 8 across the course. Memorise method, variables, expected results.
Outcome. Required-practical questions guaranteed marks.
Final 2 weeks
Past papers + examiner reports. Identify your specific weak areas.
Outcome. Exam-ready.
Last reviewed 26 May 2026.
Related · explore the spec further
AQA is the largest exam board in England, setting GCSE and A-Level exams taken by millions of students each year. Known for clear mark schemes and well-structured specifications across all major subjects.
AQA GCSE Chemistry comprises three equally-weighted papers, each lasting 1 hour 45 minutes and worth 96 marks, totalling 288 marks across the qualification. You'll face a mixture of multiple-choice questions, short-answer responses, and extended writing tasks that test both knowledge recall and application of chemical concepts. AQA's Chemistry specification is renowned for its clear, linear progression through fundamental concepts before building to complex topics like organic chemistry and equilibrium. Their mark schemes reward precise scientific language and logical problem-solving, making understanding the 'why' behind reactions just as important as memorising equations. AQA's structured approach means consistent question patterns across papers, allowing you to refine your technique through past papers.
Use AQA's specification document as your revision anchor. It explicitly lists all required practicals and mathematical skills you'll need. Cross-reference each topic against past papers to identify which concepts appear most frequently—AQA tends to revisit certain calculations like moles and percentage yield repeatedly across their papers.
Practice AQA's multiple-choice sections strategically. Paper 1 includes 15 multiple-choice questions worth 1 mark each. Don't rush these; use them as confidence-builders, but allocate roughly 20 minutes to ensure accuracy. AQA's distractors in chemistry are often based on common misconceptions, so understanding why answers are wrong strengthens your conceptual knowledge.
Tackle the required practicals thoroughly. AQA explicitly assesses practical understanding through exam questions about experimental design, safety, and data analysis. Familiarise yourself with how to describe apparatus, explain variables, and calculate percentage errors—these appear in multiple papers with varying mark allocations.
Create formula sheets from AQA's Chemistry equation list. AQA provides certain equations in their papers, but you must memorise others. Organise these by topic and test yourself weekly. Pay particular attention to organic chemistry structures and energy calculations, where AQA frequently allocates 4-6 mark questions.
Manage the three papers strategically. Each paper has identical time allocation (1 hour 45 minutes for 96 marks), approximately 1 minute per mark. AQA front-loads difficulty across papers, so allocate 20 minutes to multiple-choice, then tackle longer questions systematically. Never spend more than 3 minutes on any single mark—flag difficult questions and return after completing easier ones.
Pay close attention to command words in AQA's questions. 'Explain' requires reasoning (typically 2 marks minimum), 'Describe' requires factual detail, and 'Calculate' demands shown working with correct units. AQA's mark schemes are strict about this distinction, so misreading 'describe' as 'explain' costs you marks. Underline command words as you read.
Structure extended responses using AQA's apparent marking criteria. For 6-mark questions on topics like bonding or reactions, AQA expects logical progression: state what happens, explain the chemistry, and link to properties or applications. Write in numbered points rather than prose paragraphs to ensure you hit all mark points. Leave space for corrections if your first explanation seems incomplete.
AQA GCSE Chemistry has three papers of equal weighting. Each paper lasts 1 hour 45 minutes and is worth 96 marks. Paper 1 and Paper 2 each contain 15 multiple-choice questions (15 marks) plus structured short and extended response questions. Paper 3 follows the same format. All three papers together total 288 marks, with no coursework component.
AQA's Chemistry specification covers 10 major topic areas: Atomic Structure and the Periodic Table, Bonding, Structure and the Properties of Matter, Quantitative Chemistry, Chemical Changes, Energy Changes, The Rate and Extent of Chemical Change, Organic Chemistry, Chemical Analysis, Chemistry of the Atmosphere, and Using Resources. These topics are distributed across all three papers, with Organic Chemistry and Quantitative Chemistry typically weighted heavily in later papers.
AQA Chemistry sits at a mid-range difficulty compared to other exam boards, with a fair distribution of accessible and challenging questions across all three papers. AQA's strength lies in consistent, predictable question patterns—once you've practised past papers, you'll recognise the structure. The difficulty lies in mathematical components (moles, equilibrium calculations) and synthesising knowledge across topics. However, AQA's clear specification and transparent mark schemes mean difficulty is manageable with systematic revision.
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