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Highest common factor — OCR GCSE Combined Science B Definition

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Combined Science
Key terms
Highest common factor

GCSE Combined Science · key term

Highest common factor

Definition

The largest whole number that divides exactly into every number in a set.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science B · J260

Chemistry, Combined Science

Then divide every number by their highest common factor: the largest whole number that divides exactly into all the counts. Use the simplified numbers as the formula’s subscripts, leaving out any subscript of one.
Revise: Determining Empirical Formulae

OCR Combined Science B past papers

Related key terms

Empirical formula
Molecular formula
Ratio
Subscript

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