Core idea of chromatography
Core idea of chromatography
Chromatography separates a mixture because each component has a different balance between two phases. The stationary phase stays still and is usually a solid, or a liquid supported on a solid. The mobile phase is the moving fluid, which may be a liquid or a gas.
Step-by-step lessons on AQA A Level Chemistry Chromatography (A-level only), covering Chromatography (A-level only). Each one builds up to exam-style questions. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.