Edexcel International A Level Chemistry — Revision Notes & Past Papers
Free Pearson Edexcel International A Level Chemistry (XCH11 IAS / YCH11 IAL) revision notes, worked examples, AI-marked practice and past papers — mapped to the full unit-based syllabus for the 2026 exam cohort.
What is Edexcel International A Level Chemistry?
What is Edexcel International A Level Chemistry?
Pearson Edexcel International A Level Chemistry (XCH11 IAS / YCH11 IAL) is a modular, unit-based science qualification for international centres, with 100% external assessment and no coursework. The IAS covers Units 1-3 and the full IAL covers Units 1-6, spanning structure and bonding, energetics and group chemistry, rates and equilibria, transition metals and organic nitrogen chemistry, plus dedicated practical-skills units (Units 3 and 6) that assess experimental technique through written examinations.
Assessment
| Paper | Total marks | Duration | Style of questions |
|---|---|---|---|
| Unit 1 | 80 marks | 1h 30 | Written exam — Structure, Bonding and Introduction to Organic Chemistry |
| Unit 2 | 80 marks | 1h 30 | Written exam — Energetics, Group Chemistry, Halogenoalkanes and Alcohols |
| Unit 3 | 50 marks | 1h 20 | Written exam — Practical Skills in Chemistry I |
| Unit 4 | 90 marks | 1h 45 | Written exam — Rates, Equilibria and Further Organic Chemistry |
| Unit 5 | 90 marks | 1h 45 | Written exam — Transition Metals and Organic Nitrogen Chemistry |
| Unit 6 | 50 marks | 1h 20 | Written exam — Practical Skills in Chemistry II |
IAS (XCH11) = Units 1-3; full IAL (YCH11) = Units 1-6. Units 1, 2, 4 and 5 are theory papers; Units 3 and 6 assess practical skills by written exam. 100% external; no coursework. IAS graded a-e; IAL graded A*-E.
Source: Edexcel International A Level Chemistry specification
Discover by Topic
Choose what you want to study and unlock related online lessons
Test Your Skills
Access Edexcel International A Levels resources, videos, MCQ and structured practice questions, plus quizzes with AI-powered detailed reports — all designed to make your revision simple, focused, and effective
AS Level Unit 1
Test your knowledge with the AS Level Unit 1 quiz.
AS Level Unit 2
Test your knowledge with the AS Level Unit 2 quiz.
A Level Unit 4
Test your knowledge with the A Level Unit 4 quiz.
A Level Unit 5
Test your knowledge with the A Level Unit 5 quiz.
How to revise Edexcel International A Level Chemistry on Tutopiya
Reading the textbook cover-to-cover isn't revision — it's reading. Here's how top Chemistry students actually use Tutopiya to get exam-ready.
Edexcel International A Level Chemistry study resources
Five tools that work together to take you from first-read to exam-ready.
Topic notes
Sub-topic-level notes with clear explanations, diagrams and worked examples — written for students.
Video lessons
Short walkthroughs that break down the concepts most students get stuck on.
AI-marked quizzes
Instant feedback on every answer, plus a report showing exactly which sub-topics to revise next.
Past papers
Real past papers with official marking schemes. Practise timing and pacing, not just content.
Practice questions
Thousands of MCQ and structured questions with step-by-step worked solutions.
Edexcel International A Level Chemistry topics
All 6 topics in the Edexcel International A Level Chemistry syllabus — click any topic to open notes, videos and an AI-marked quiz.
Edexcel International A Level Chemistry revision — frequently asked questions
Answers to the questions Chemistry students ask most before they start revising.
Start revising Chemistry today
Pick a topic above and dive into the notes, videos, practice questions and AI-marked quizzes — built around the XCH11-YCH11 syllabus.