How to teach collision theory and what affects rates of reaction at 14–16

By Kate Comisso2025-06-05T08:41:00

A diagram showing how when two molecules collide they have to have enough energy to react together

Source: © Royal Society of Chemistry

Help students tackle the topic of collision theory head on with these teaching strategies

Ever wondered why a flour mill can explode or what truly makes reactions speed up? Delve into the devastating 1878 Minneapolis flour mill explosion to unpack the science of collision theory with your 14–16 learners. We’ll explore how factors like catalysts temperature, concentration and surface area dictate the rate of chemical reactions, and how a single spark can ignite a catastrophic chain reaction. Use the practical teaching strategies and learn how to tackle common student misconceptions, ensuring your learners master this fundamental concept. Suitable for key stage 3, years 8–10 in Northern Ireland, S1–2 in Scotland and Junior cycle year in Republic of Ireland.

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