Key term for OCR GCSE Chemistry A, used in Introducing chemical reactions.
A small number written at the bottom right of a chemical symbol indicating the ratio of atoms or ions in a formula.
Subscript appears in OCR GCSE Chemistry A revision content for Chemical reactions, especially Introducing chemical reactions and Deducing Compound Formulae.
Chemical reactions
Introducing chemical reactions • Deducing Compound Formulae
Chemical reactions
Introducing chemical reactions • Writing Balanced Equations
Chemical reactions
Introducing chemical reactions • Chemical Formulae
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