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Chemistry · Paper 2 · Foundation + Higher

How fast is a reaction?

Key ideas1 of 3

Rate means speed

A reaction’s rate tells us how quickly reactants are used up or products form. A faster reaction makes the same amount of product in less time.

Gas-volume curves A and B both reach 60 cm³. A reaches its plateau at 40 s; B at 80 s.

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Practice, downloads and sources

Daily 5 · Exam practice · Revision sheet ↓

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

AQA Combined Science Trilogy 8464 · 5.6.1.1. Original teaching notes, questions and diagrams. Animations are simplified models; speeds and practical readings are illustrative.