Two competing phases
Two competing phases
Paper chromatography separates dissolved substances using two phases. The chromatography paper is the stationary phase, while the solvent rising through it is the mobile phase.
Step-by-step lessons covering AQA GCSE Chemistry 8.1.3 Chromatography for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.