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Chemistry · Paper 2 · Foundation + Higher

Reversible reactions and energy

Key ideas1 of 3

A reaction can go both ways

In a reversible reaction, products can react to form the original reactants. The symbol ⇌ shows both directions. Changing conditions can favour a direction.

Blue hydrated copper sulfate before heating.

Next: Dynamic equilibrium →
Practice, downloads and sources

Daily 5 · Exam practice · Revision sheet ↓

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

AQA Combined Science Trilogy 8464 · 5.6.2.1–5.6.2.2. Original teaching notes, questions and diagrams. Animations are simplified models; speeds and practical readings are illustrative.