OCR A Year 12 Chemistry

Choose the topic you are studying. Each section takes you straight to the relevant questions, labs or quick checks.

Year 12 organic chemistry Head Start

What are you working on?

Show formulae, equations and observations clearly across amounts, redox and practical work.

Atomic structure & periodicity

OCR 2.1.1 · 2.2.1 · 3.1.1

Isotopes & mass spectrometryRelative atomic mass, abundance and mass spectra Open Ionisation energyFirst and successive ionisation energies Open Periodicity exam questionsFull-A-level Periods 2 and 3 trends, structures, data and examiner-mode answer diagnosis Open Periodic Higher or LowerElement trends Open Element gameAtoms and elements Open

Group 2

OCR 3.1.2

Group 2 exam questionsFull-A-level reactions, first + second IE reasoning, oxide alkalinity and OCR-specific base chemistry Open

Halogens (Group 17)

OCR 3.1.3

Halogens exam questionsFull-A-level displacement, observations, ionic equations, disproportionation and OCR-specific organic-layer practice Open

Amount of substance

OCR 2.1.3

Moles & stoichiometryFormulae, reacting amounts, gases and yield Open Ideal gas equationpV = nRT · OCR uses R = 8.314 Open Titration questionsMoles, concentration and practical results Open Back titrationMulti-stage amount-of-substance problems Open Amount of substance quick checkShort recall quiz Open All calculationsBrowse the calculation generators Open

Bonding & structure

OCR 2.2.2 · 3.1.1

Structure & bonding suiteStart here for the complete topic Open Bonding exam practiceOriginal questions for OCR A with mark-point feedback Open Shape LabElectron regions, lone pairs, shapes and angles Open Polarity & intermolecular forcesDipoles, London forces and hydrogen bonding Open Bond BuilderIonic, covalent, multiple and dative bonding Open Bonding quick checkShort structure and forces quiz Open Bonding BlasterFast retrieval practice Open Bonding DropStructure and properties game Open

Acids, equations & redox

OCR 2.1.2 · 2.1.4 · 2.1.5

Equation BuilderFormulae, balancing, ionic and redox equations Open Acid–base titration practiceStandard solutions and titration calculations Open OCR definitions matchingBoard-specific terms and definitions Open

Energetics

OCR 3.2.1

Hess's lawFormation, combustion and unfamiliar cycles Open

Rates & equilibrium

OCR 3.2.2 · 3.2.3

Kinetics topic routeYear 12 foundations and later rate equations Open Maxwell–Boltzmann distributionsTemperature, activation energy and catalysts Open EquilibriumKc, dynamic equilibrium and the route on to Year 13 Kp Open Kc calculationsEquilibrium amounts, concentrations, expressions and units Open Kc & Qc simulatorExpressions and equilibrium response Open

Practical chemistry & analysis

OCR Module 1 · 3.1.4 · PAGs

OCR A PAGsPAG1–PAG12 practical groups Open Practical skills practiceMethods, data, uncertainty and evaluation Open