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A-Level Chemistry Kinetics Notes – Clear Summary & Exam Tips (Edexcel/AQA/OCR)

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Get concise and easy-to-understand A-Level Chemistry notes on Kinetics, perfect for Edexcel, AQA, and OCR exam boards. This summary covers key concepts like collision theory, activation energy, factors affecting reaction rates, rate equations, and the Arrhenius equation — all explained simply with exam tips and diagrams. Ideal for quick revision and to boost your confidence before exams. Includes: Clear definitions and explanations Energy profile diagrams with labels Step-by-step guide to calculating reaction orders Important formulas and units Tips on interpreting graphs and answering exam questions Boost your Chemistry grade with these well-organized notes — suitable for beginners and anyone looking to revise effectively.

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A-Level Chemistry – Kinetics Summary
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(Edexcel / AQA / OCR – Pure Chemistry)




1. What is Kinetics?
●​ Kinetics studies the rate of chemical reactions — how fast reactants turn into
products.​

●​ Reaction rate depends on collision frequency and energy of collisions between
particles.​




2. Factors Affecting Reaction Rate
Factor Effect on Rate Explanation

Concentration Higher conc. → faster rate More particles in same volume → more
collisions

Pressure Higher pressure → faster More gas particles in volume → more
(gases) rate collisions

Surface Area More surface area → faster More area for particles to collide
rate

Temperature Higher temp → faster rate Particles move faster and have more energy

Catalyst Increases rate without Lowers activation energy → more successful
being used collisions




3. Collision Theory

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