Collision theory
Collision theory
Collision theory states that reacting particles must collide before a reaction can occur. However, not every collision causes a reaction.
Step-by-step lessons on AQA GCSE Chemistry 6.1.3 Collision theory and activation energy. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.