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Impure substance — OCR GCSE Combined Science A Definition

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Combined Science
Key terms
Impure substance

GCSE Combined Science · key term

Impure substance

Definition

A sample containing more than one substance; chemically, it is a mixture.

Used by OCR

How each exam board covers it

OCR GCSE Combined Science A · J250

Specification C2.1k · Chemistry Paper 1

Revise: Chromatography for Purity Testing

OCR Combined Science A past papers

Related key terms

Chromatogram
Chromatography
Gas chromatography
Mobile phase
Paper chromatography

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Stationary phase

Thin-layer chromatography (TLC)