A level Chemistry: Exam Structure by Board

Your Teacher Information Pack for A level Chemistry: how it is assessed for each board, key dates for summer 2027, and links to specifications, past papers and grade boundaries.

Entries: Ofqual provisional entries, summer 2026 (rounded to the nearest 5).

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Exam structure by board

Pick your board to see every paper with its length, marks and weighting, plus practicals, booklets and links.

AQA A-level Chemistry (7405)

First taught 2015 · first exams 2017 · 12 required practicals

Paper	Time	Marks	Weight
Paper 1: Physical and inorganic chemistry	2 h	105	35%
Paper 2: Physical and organic chemistry	2 h	105	35%
Paper 3: Any content and practical skills	2 h	90	30%
Practical endorsement: Practical endorsement Endorsement	not stated	–	Reported separately

Full AQA pack · specification on the AQA website

Pearson Edexcel A level Chemistry (9CH0)

First taught 2015 · first exams 2017 · 16 required practicals

Paper	Time	Marks	Weight
Paper 1: Advanced Inorganic and Physical Chemistry	1 h 45 min	90	30%
Paper 2: Advanced Organic and Physical Chemistry	1 h 45 min	90	30%
Paper 3: General and Practical Principles in Chemistry	2 h 30 min	120	40%
Science Practical Endorsement: Science Practical Endorsement Endorsement	not stated	–	Reported separately

Full Pearson Edexcel pack · specification on the Pearson Edexcel website

OCR A Level Chemistry A (H432)

First taught 2015 · first exams 2017 · 12 required practicals

Paper	Time	Marks	Weight
Component 01: Periodic table, elements and physical chemistry	2 h 15 min	100	37%
Component 02: Synthesis and analytical techniques	2 h 15 min	100	37%
Component 03: Unified chemistry	1 h 30 min	70	26%
Component 04: Practical Endorsement Endorsement	not stated	–	Reported separately

Full OCR pack · specification on the OCR website

OCR A Level Chemistry B (Salters) (H433)

First taught 2015 · first exams 2017

Paper	Time	Marks	Weight
Component 01: Fundamentals of chemistry	2 h 15 min	110	41%
Component 02: Scientific literacy in chemistry	2 h 15 min	100	37%
Component 03: Practical skills in chemistry	1 h 30 min	60	22%
Component 04: Practical Endorsement Endorsement	not stated	–	Reported separately

Full OCR pack · specification on the OCR website

WJEC Eduqas A level Chemistry (A410QS)

First taught 2015 · first exams 2017

Paper	Time	Marks	Weight
Component 1: Physical and Inorganic Chemistry	2 h 30 min	120	40%
Component 2: Organic Chemistry and Analysis	2 h 30 min	120	40%
Component 3: Practical-focused written paper (title to confirm)	1 h 15 min	60	20%
Practical endorsement: Practical endorsement Endorsement	not stated	–	Reported separately

Full WJEC Eduqas pack · specification on the WJEC Eduqas website

Key dates

Official documents

• Ofqual subject-level conditions and requirements (GOV.UK)
• Grade boundaries: AQA
• Grade boundaries: Pearson Edexcel
• Grade boundaries: OCR
• Grade boundaries: WJEC Eduqas
• Past papers: AQA
• Past papers: Pearson Edexcel
• Past papers: OCR
• Past papers: WJEC Eduqas

More packs

Before this: GCSE Chemistry exam structure. Other Level 3 packs: A level Mathematics, A level Psychology, A level Biology, A level Economics, A level Business, A level History, A level Physics, A level Sociology, A level Art and design, A level English literature, A level Geography, A level Politics, A level Media, film and TV studies, A level Further mathematics, Extended Project Qualification (EPQ), Core Maths (Level 3). Find another TIP

Questions teachers ask