OCR A-level Chemistry (H432)
Every topic with its OCR specification reference, free notes and tools to revise it, and your summer 2027 papers.
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| Topic | Spec | Notes and tools | How sure |
|---|---|---|---|
| Atomic structure and amount of substance | 2.1.1 to 2.1.3, 2.2.1 and 3.1.1 | Electron configurations and ionisation energiesThe ideal gas equationThe mole, the Avogadro constant and concentration Scientific calculatorPeriodic tableMolar mass | |
| Bonding and shapes of molecules | 2.2.2 | Periodic table | |
| Energetics and thermodynamics | 3.2.1, 5.2.1 and 5.2.2 | Enthalpy changes, calorimetry and Hess's law Scientific calculator | |
| Kinetics and rate equations | 3.2.2 and 5.1.1 | ||
| Equilibria, Kc and Kp | 3.2.3 and 5.1.2 | Dynamic equilibrium, Le Chatelier's principle and Kc |
6 topics
| Topic | Spec | Notes and tools | How sure |
|---|---|---|---|
| Redox and electrode potentials | 2.1.5 and 5.2.3 | Oxidation states, half-equations and redox | |
| Acids, bases and pH | 5.1.3 | Brønsted-Lowry acids, pH and Kw Scientific calculator | |
| Periodicity, Group 2, the halogens and Period 3 | 3.1.1 to 3.1.4 | ||
| Transition metals and ions in solution | 5.3.1 | ||
| Organic chemistry: functional groups | 4.1 and 4.2 | Naming organic compounds and isomerism | |
| Organic synthesis and analysis | 6.1 to 6.3 |
Your summer 2027 exams
| Paper | Date | Starts | Length |
|---|---|---|---|
| Periodic table, elements and physical chemistry H432/01 | Friday 28 May 2027 | 9:00 | 2h 15m |
| Synthesis and analytical techniques H432/02 | Thursday 10 June 2027 | 9:00 | 2h 15m |
| Unified chemistry H432/03 | Thursday 17 June 2027 | 9:00 | 1h 30m |
Foundation and Higher papers are sat at the same time, so one row covers both. Source: OCR AS and A Level final examination timetable, June 2027 (final timetable), read on Wed 7 Oct. PDF (opens a new tab)
Official OCR pages
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- Exam timetables (opens a new tab)
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