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GCSE OCR Chemistry

Complete revision notes and practice questions for OCR GCSE (9-1) Chemistry A — Gateway Science (J248). Every topic, every tier — organised and ready to go.

J248Spec Code
2 (F) / 2 (H)Papers
7Topics
Also available for: Edexcel AQA OCR CIE IGCSE Edexcel
Paper 1 (Topics C1–C3)
⚛️
C1. Particles
2 sub-topics
Foundation & Higher
C1.1
The Particle Model
Notes Practice
C1.2
Atomic Structure
Notes Practice
🔗
C2. Elements, Compounds and Mixtures
3 sub-topics
Foundation & Higher
C2.1
Purity and Separating Mixtures
Notes Practice
C2.2
Bonding
Notes Practice
C2.3
Properties of Materials
Notes Practice
⚗️
C3. Chemical Reactions
4 sub-topics
Foundation & Higher
C3.1
Introducing Chemical Reactions
Notes Practice
C3.2
Energetics
Notes Practice
C3.3
Types of Chemical Reactions
Notes Practice
C3.4
Electrolysis
Notes Practice
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Paper 2 (Topics C4–C6)
🧪
C4. Predicting and Identifying Reactions and Products
2 sub-topics
Foundation & Higher
C4.1
Predicting Chemical Reactions
Notes Practice
C4.2
Identifying the Products of Chemical Reactions
Notes Practice
⏱️
C5. Monitoring and Controlling Chemical Reactions
3 sub-topics
Foundation & Higher
C5.1
Monitoring Chemical Reactions
Notes Practice
C5.2
Controlling Reactions
Notes Practice
C5.3
Equilibria
Notes Practice
🌍
C6. Global Challenges
3 sub-topics
Foundation & Higher
C6.1
Improving Processes and Products
Notes Practice
C6.2
Organic Chemistry
Notes Practice
C6.3
Earth Systems and the Atmosphere
Notes Practice
🔬
C7. Practical Skills
1 sub-topic • Assessed across both papers
Foundation & Higher
C7
Practical Activity Groups (PAGs)
Notes Practice

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