OCR A Level Chemistry Notes & Worksheets (H432) — Topic Questions & Mark Schemes

OCR A Level Chemistry questions by topic, plus full mark schemes — covering the whole H432 specification, organised chapter by chapter so you can revise one topic at a time. Every download is a free PDF with exam-style questions, ruled answer space and a complete, examiner-style mark scheme. No sign-up needed.

• 26 free downloads covering the full OCR H432 specification, from atomic structure to transition elements
• 2,400+ marks of structured OCR-style topic questions with full mark schemes
• Written for the OCR H432 specification, matching the exact topic order used in OCR exam papers

How to use these OCR A Level Chemistry questions by topic

Work through the chapters in order alongside your OCR A Level Chemistry course, or jump straight to the topic you’re revising. Each worksheet is designed like a mini topical past paper — questions by topic, with mark allocations shown in brackets, followed by a full mark scheme so you can self-mark and see exactly how marks are awarded. If you’re looking for official OCR A level chemistry past papers, download these alongside OCR’s own past papers and mark schemes from the official OCR website for full exam practice.

Module 2 — Foundations in Chemistry

Atomic structure, amount of substance, acids and redox, bonding and structure — the foundation topics examined on OCR Paper 1 and Paper 2.

• Chapter 2 — Atoms, Ions and Compounds: Topic Questions & Mark Scheme (PDF, 100 marks)
• Chapter 3 — Amount of Substance: OCR Questions & Mark Scheme (PDF, 99 marks)
• Chapter 4 — Acids and Redox: Topic Questions & Mark Scheme (PDF, 100 marks)
• Chapter 5 — Electrons, Bonding and Structure: Topic Questions & Mark Scheme (PDF, 104 marks)
• Chapter 6 — Intermolecular Forces, Structures and Properties: Topic Questions & Mark Scheme (PDF, 89 marks)

Module 3 — Periodic Table and Energy

Periodicity, Group 2 and Group 7 chemistry, enthalpy changes, reaction rates and chemical equilibrium — key OCR Paper 1 topics.

• Chapter 7 — Periodicity: Topic Questions & Mark Scheme (PDF, 84 marks)
• Chapter 8 — Group 2, the Alkaline Earth Metals: Topic Questions & Mark Scheme (PDF, 85 marks)
• Chapter 9 — Group 7, the Halogens: Topic Questions & Mark Scheme (PDF, 88 marks)
• Chapter 10 — Enthalpy Changes: Topic Questions & Mark Scheme (PDF, 86 marks)
• Chapter 11 — Reaction Rates: Topic Questions & Mark Scheme (PDF, 88 marks)
• Chapter 12 — Chemical Equilibrium: Topic Questions & Mark Scheme (PDF, 95 marks)

Module 4 — Core Organic Chemistry

Nomenclature and isomerism, alkanes, alkenes, alcohols, haloalkanes, organic synthesis and introductory IR spectroscopy — the OCR Paper 2 organic core.

• Chapter 13 — Basic Concepts in Organic Chemistry: Topic Questions & Mark Scheme (PDF, 90 marks)
• Chapter 14 — Alkanes: Topic Questions & Mark Scheme (PDF, 78 marks)
• Chapter 15 — Alkenes: Topic Questions & Mark Scheme (PDF, 86 marks)
• Chapter 16 — Alcohols: Topic Questions & Mark Scheme (PDF, 86 marks)
• Chapter 17 — Haloalkanes: Topic Questions & Mark Scheme (PDF, 84 marks)
• Chapter 18 — Organic Synthesis and Analytical Techniques: Topic Questions & Mark Scheme (PDF, 80 marks)

Module 5 — Physical Chemistry and Transition Elements

Rate equations, the equilibrium constant K_p, acids/bases/pH, buffers, enthalpy/entropy/free energy, electrode potentials and transition elements — the OCR Paper 2 physical chemistry topics.

• Chapter 19 — Rate Equations: Topic Questions & Mark Scheme (PDF, 90 marks)
• Chapter 20 — The Equilibrium Constant Kp: Topic Questions & Mark Scheme (PDF, 76 marks)
• Chapter 21 — Acids, Bases and pH: Topic Questions & Mark Scheme (PDF, 92 marks)
• Chapter 22 — Buffers and Titration Curves: Topic Questions & Mark Scheme (PDF, 84 marks)
• Chapter 23 — Enthalpy, Entropy and Free Energy: Topic Questions & Mark Scheme (PDF, 96 marks)
• Chapter 24 — Redox and Electrode Potentials: Topic Questions & Mark Scheme (PDF, 94 marks)
• Chapter 25 — Transition Elements: Topic Questions & Mark Scheme (PDF, 118 marks)

Module 6 — Organic Chemistry and Analysis (Synoptic Papers)

Aromatic compounds, carbonyls and carboxylic acids, nitrogen compounds and polymers, organic synthesis routes, chromatography and spectroscopy — brought together in two full-length synoptic papers.

• Module 6 Synoptic Worksheet — Aromatics, Carbonyls, Nitrogen Compounds, Synthesis & Analysis (PDF, 121 marks)
• Module 6 Full Structured Practice Paper — with ruled answer spaces (PDF, 150 marks)

About the author

Fahad Hameed Ahmad — MS, National University of Singapore (NUS); BS, NUST, Pakistan. 15+ years of A Level, IGCSE and O Level Chemistry teaching experience. Student results include a World Distinction in A Level Chemistry (2024) and Top in Pakistan in iGCSE (2018) and O Level (2014). Get in touch via WhatsApp: +92 323 509 4443.

Frequently asked questions

Are these OCR A Level Chemistry notes and questions really free?

Yes. Every worksheet and mark scheme on this page is free to download as a PDF, with no sign-up required.

Is this based on the OCR H432 specification?

Yes. All 26 documents follow the OCR A Level Chemistry A (H432) specification, in the same topic order used across OCR’s own scheme of work — from Module 2 (Foundations in Chemistry) through to Module 6 (Organic Chemistry and Analysis).

Do the worksheets include mark schemes?

Yes. Every worksheet is followed by a full, examiner-style mark scheme, with marking points broken down per question part so you can self-mark accurately.

Where can I find official OCR A Level Chemistry past papers?

Official OCR A Level Chemistry (H432) past papers and mark schemes are published by OCR and are best sourced directly from the OCR website or your exam centre, since these are OCR’s own copyrighted exam papers. The topic questions on this page are original practice material written to the same specification, designed to be used alongside official past papers for full topic-by-topic revision.

What topics does OCR A Level Chemistry (H432) cover?

The specification is split into six modules: practical skills, foundations in chemistry, the periodic table and energy, core organic chemistry, physical chemistry and transition elements, and organic chemistry and analysis. This page provides topic questions for every examinable chapter across Modules 2 to 6.

Can I get live OCR A Level Chemistry classes as well?

Yes — message us on WhatsApp (+92 323 509 4443) or visit the Our Teachers page to book a free demo lesson.

Related resources: Cambridge (CAIE) A Level Chemistry Notes · All Free Study Notes