Key term for AQA GCSE Chemistry, used in Reversible Reactions and Equilibrium.
The amount of a substance in a reaction, determined by looking at the stoichiometric coefficients (the large numbers) in the balanced symbol equation.
Number of molecules appears in AQA GCSE Chemistry revision content for The rate and extent of chemical change, especially Reversible Reactions and Equilibrium and Pressure Effects on Equilibrium.
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