Chemistry · IGCSE · Cambridge · Cambridge IGCSE (9–1) Chemistry 0971 (Extended) (2026–2028) · Specification point · 12.3 · Experimental techniques and chemical analysis
Read Notes
Read clear notes for this topic.
Exam Questions
Coming soon
Flashcards
Flip through flashcards to lock it in.
Lesson
Coming soon
Ask Sage
Get help from Sage on this topic.
12.3 Chromatography
| Core | Supplement |
|---|---|
1 Describe how paper chromatography is used to separate mixtures of soluble coloured substances, using a suitable solvent | 3 Describe how paper chromatography is used to separate mixtures of soluble colourless substances, using a suitable solvent and a locating agent Knowledge of specific locating agents is not required |
2 Interpret simple chromatograms to identify: (a) unknown substances by comparison with known substances (b) pure and impure substances | 4 State and use the equation for Rₙ: |