Collision theory
Collision theory
Collision theory states that reacting particles must collide before a reaction can occur. A collision is successful only when the particles collide with energy at or above the activation energy and with a suitable orientation. In a successful collision, bonds in the reactants can break and new bonds form, producing different chemical species. Having enough energy is necessary but is not sufficient if the particles are not correctly oriented.
Step-by-step lessons covering AQA GCSE Chemistry 6.1.3 Collision theory and activation energy for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.
