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Chemistry · Paper 2 · Foundation + Higher · C8

How chromatography separates substances

Key ideas1 of 3

Separate and identify

Chromatography separates mixtures and provides evidence to help identify their components. A spot of a soluble dye mixture can separate into several spots as solvent moves up paper.

Start with a small, dried spot of a mixture.

Next: Required practical: paper chromatography →
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Foundation + Higher · C8. All C8 lessons are shared by Foundation and Higher Tier.

AQA Combined Science Trilogy 8464 · 5.8.1.3. Original notes, questions and diagrams. Models are simplified, not to scale; illustrative data are labelled.