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Edexcel A Level Chemistry (9CH0)

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Introduction

Edexcel
A Level
Chemistry

The Pearson Edexcel Level 3 Advanced GCE in Chemistry is the standard A Level Chemistry qualification for students studying in England. A fully linear qualification, all three written papers are sat at the end of Year 13 in the May/June exam series. This page covers everything you need to know about the qualification, its structure, and what each paper involves.

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A Linear Qualification

The Edexcel A Level in Chemistry (9CH0) is assessed entirely at the end of the two-year course. All three written papers are sat in May/June of Year 13 – there are no January or October exam windows. Grades are awarded on a single A*-E scale.

The Practical Endorsement

Alongside the three written papers, students complete a Science Practical Endorsement (9CH0/04), assessed by teachers throughout the course. It is reported separately as Pass or Fail and does not contribute to the A Level grade – but is required by many universities.

AS Level Chemistry

An AS Level in Chemistry (8CH0) exists as a separate, standalone qualification sat in May/June of Year 12. It does not contribute to the A Level grade and is a completely independent qualification.

Paper 1 – Advanced Inorganic And Physical Chemistry

Paper code: 9CH0/01
Written examination: 1 hour 45 minutes | 90 marks | 30% of total A Level

Covers Topics 1-5, 8 and 10-15: atomic structure, bonding, redox, inorganic chemistry, formulae and amounts, energetics, equilibria and transition metals.

Assessed through multiple-choice, short open, open-response and calculation questions. Core Practicals CP1-CP3, CP8-CP12 are examined in this paper.

Paper 2 – Advanced Organic And Physical Chemistry

Paper code: 9CH0/02
Written examination: 1 hour 45 minutes | 90 marks | 30% of total A Level

Covers Topics 2, 3, 5-7 and 9, 16-19: bonding, redox, organic chemistry, analytical techniques, kinetics and organic synthesis.

Assessed through multiple-choice, short open, open-response and extended writing questions. Core Practicals CP4-CP7, CP13-CP16 are examined in this paper.

Paper 3 – General And Practical Principles In Chemistry

Paper code: 9CH0/03
Written examination: 2 hours 30 minutes | 120 marks | 40% of total A Level

Synoptic paper drawing on the full specification and all 16 core practicals, including questions that cross two or more topics.

Assessed through short open, open-response, extended writing and calculation questions. At least 20% of marks target mathematics at Level 2 or above.

The Three Papers – How The A Level Is Assessed

The A Level is assessed through three externally examined papers, all sat at the end of Year 13. Papers 1 and 2 each cover distinct areas of the chemistry content. Paper 3 is a synoptic paper that draws on the full specification and assesses practical understanding. All three papers are available in the May/June exam series only.

Edexcel A Level Chemistry Topic 6A and 6B Organic Chemistry and Alkanes course card

Organic Chemistry and Alkanes – Topic 6A/6B

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Edexcel A Level Chemistry assessment structure pathway

Study Edexcel Chemistry with OLS

OLS courses are built exclusively around the Edexcel specification, with recorded lessons, interactive study notes, Edexcel exam question practice, and specialist marked assignments for every unit.

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Edexcel A Level Chemistry online virtual lesson with tutor
Full Qualification

Take the A Level if…

Edexcel A Level – 9CH0

You need chemistry for university entry, particularly for medicine, dentistry, pharmacy, biochemistry, chemical engineering or any science degree. The Edexcel A Level (9CH0) is the standard qualification required by UK universities and is accepted worldwide. If chemistry is a prerequisite for your intended course, this is the qualification you need.

Standalone Award

Take the AS Level if…

Edexcel AS Level – 8CH0

You want a recognised chemistry qualification without committing to the full two-year A Level course. The Edexcel AS Level (8CH0) is a standalone award sat at the end of Year 12. Note that it does not contribute to the A Level grade, it is a completely separate qualification, useful for demonstrating chemistry knowledge at a subsidiary level.

Edexcel A Level Chemistry Topic 6A and 6B Organic Chemistry and Alkanes course card

Organic Chemistry and Alkanes – Topic 6A/6B

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Watch an Edexcel Chemistry Lesson Preview

See how OLS uses visual explanation, molecular models and specialist teacher commentary to support difficult A Level Chemistry topics.

Official Specification

The official Pearson Edexcel Chemistry specification covering all six units, assessment structure, topic content, and the core practical activities. Essential reading for any IAL Chemistry student.

Edexcel Chemistry Specification →

Past Papers & Mark Schemes

The official Pearson past paper repository for Edexcel Chemistry, including exam papers, mark schemes and examiner reports from all available series.

Edexcel Past Papers →

Chemistry Reference Library

LibreTexts Chemistry is a free, open-access chemistry library covering a wide range of topics at A Level and beyond, useful for deeper reading and alternative explanations of difficult concepts.

LibreTexts Chemistry →

FAQ

The Edexcel A Level (9CH0) is the standard chemistry qualification for students studying in England, regulated by Ofqual. It is linear: all three papers are sat at the end of Year 13 in May/June only. The Edexcel IAL is designed for international students, has a modular structure with exam windows in January, June and October, and is not regulated by Ofqual. The content is comparable across both qualifications and both are accepted by UK universities.
The Edexcel A Level in Chemistry consists of three externally assessed written papers: Paper 1, Paper 2 and Paper 3. All three are sat at the end of Year 13 in the May/June series. Alongside the written papers, students must also complete the Science Practical Endorsement, which is teacher assessed throughout the course and reported separately as Pass or Fail. There is no coursework component: all graded assessment is through written papers.
Yes. The Edexcel A Level in Chemistry is a fully Ofqual-regulated qualification and is accepted by all UK universities. It is the standard entry qualification for chemistry, medicine, dentistry, pharmacy, biochemistry and related science degrees. Students should always verify the specific entry requirements of their target institutions directly.
Edexcel A Level Chemistry exams are available in one series per year: May/June only. Unlike the Edexcel IAL, there are no January or October windows. All three papers must be sat in the same exam series at the end of Year 13. Students cannot spread papers across different sessions or resit individual papers in isolation.
Yes, but with important limitations. All three papers must be resit in the same May/June series: you cannot resit individual papers in isolation across different sessions. Students who resit will sit all three papers again in a subsequent May/June series. There are no January or October resit windows available for the A Level.
Yes. The Pearson Data Booklet is provided in the examination and contains physical constants, electrochemical series data, and other reference information. Students should familiarise themselves with its contents during their preparation so they can locate and apply data efficiently under exam conditions.
The AS Level (8CH0) and A Level (9CH0) are separate qualifications: the AS does not contribute to the A Level grade. Students who complete the AS Level in Year 12 and wish to continue to the full A Level will sit the three A Level papers at the end of Year 13 in their entirety. The AS grade is reported independently and does not carry forward.
A minimum of 20% of marks across all three A Level Chemistry papers are awarded for mathematics at Level 2 or above. This includes rearranging equations, calculations involving moles, concentration, enthalpy, equilibrium constants, and rate equations. Strong mathematical confidence is essential for achieving top grades, particularly in Paper 3 where the synoptic and practical calculation questions carry significant marks.