BRAINCAKE

Collision Theory

Edexcel AS-level ChemistryReaction RatesLesson 2 of 12

Collision theory explains why reactions happen and what controls their rate.

For particles to react, they must collide. In a gas at room temperature each particle collides with others billions of times every second. If every collision caused a reaction, all reactions would be almost instant. In fact only a tiny fraction of collisions lead to a reaction.

A collision is successful (leads to a reaction) only if two conditions are met.

Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz

BrainCake is free. Make an account in seconds and pick up where this page stops.

More in Reaction Rates

All 12 lessons in Reaction Rates · All Edexcel AS-level Chemistry topics