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Chemistry · Paper 2 · Foundation + Higher

Collisions and temperature

Key ideas1 of 3

Particles must collide

Reacting particles need to collide with enough energy for a reaction to happen. A collision alone does not guarantee a reaction.

Two approaching reactant particles; collisions must have sufficient energy to react.

Next: Concentration and gas pressure →

Collision Theory Lab →

Practice, downloads and sources

Daily 5 · Exam practice · Revision sheet ↓

Foundation + Higher. C6 · Rate and extent of chemical change.

AQA Combined Science Trilogy 8464 · 5.6.1.2–5.6.1.3. Original teaching notes, questions and diagrams. Animations are simplified models; speeds and practical readings are illustrative.