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Free A-level chemistry

A-level chemistry practice for AQA and OCR A

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Student FAQ + ask a question Questions about Chemistry Help, My Chemistry, sign-in and your course. If your answer isn't there, ask and check back for a reply.
Search by topic, chemistry term, common abbreviation or approximate spelling. If you're signed in, close matches from your AQA or OCR A course come first.
Organic conversion games Choose the AQA or OCR A topics you have covered, then practise the conversions as functional groups, named compounds or structural formulae. Choose Sprint when you want to race the clock.
AQA organic synthesis Plan routes of up to four steps, choose reagents and conditions, and practise amines, acylation and synthesis decisions without needing a drawing tool.
Amino acids, amides & chirality AQA and OCR A practice on amino-acid acid–base chemistry, zwitterions and chirality, with OCR amides and hydrolysis where the board requires them.
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Environmental organic chemistry AQA questions on combustion and pollutants, catalytic converters, flue-gas desulfurisation, CFC photolysis and the chlorine-radical ozone cycle.
AQA Quick Revision Work through all 498 AQA specification points in syllabus order, with tutor explanations, equations, worked examples, common mistakes and linked practice where useful.
OCR A Quick Revision All 450 OCR A specification points across 39 topics, with concise tutor explanations, calculations, exam warnings and linked practice.

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Back titrationCalculation practice and worked reasoningOpen → Moles & amount of substanceStoichiometry, gases, formulae and yieldOpen → TitrationsCalculations, results and practical techniqueOpen → Isotopes & mass spectrometryAᵣ, abundance, spectra and harder algebraOpen → Structure & bondingBonding, shapes, polarity, forces and exam practiceOpen → Ionisation energyGraphs, trends and successive ionisation energiesOpen → Hess's lawFormation, combustion and experimental cyclesOpen → ThermodynamicsBorn–Haber, ionic energetics, entropy and GibbsOpen → Electrode potentialsE°cell, redox direction and electrochemical cellsOpen → Maxwell–Boltzmann distributionsTemperature, activation energy and catalystsOpen → NMR spectroscopyCarbon-13, proton NMR and structure deductionOpen → Acids, bases & bufferspH, Ka, Kw and buffer calculationsOpen → KineticsRate equations, Arrhenius and linked exam practiceOpen → OCR A transition metalsComplexes, colours, redox and qualitative testsOpen →

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CALCCalculationsQuestion generators for numerical chemistryOpen → PRACTPractical chemistryMethods, data, uncertainty and evaluationOpen → GAMEChemistry gamesFast retrieval practice and reaction gamesOpen → MYMy ChemistrySpecification tracking, saved mistakes and 5,578 questionsOpen →

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