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Chemistry
Key terms
Atom ratio

GCSE Chemistry · key term

Atom ratio

Definition

A comparison showing the relative numbers of different atoms, written in the same order as their element symbols.

Used by OCR

How each exam board covers it

OCR GCSE Chemistry A · J248

Specification C2.1d · Paper 1 (Foundation), Paper 3 (Higher)

Revise: Deducing Empirical Formulae

OCR Chemistry A past papers

Related key terms

Empirical formula
Formula unit
Highest common factor
Subscript

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Atom ratio — OCR GCSE Chemistry A Definition | GradeGen