The idea behind chromatography
The idea behind chromatography
Chromatography separates mixtures because different substances distribute differently between a stationary phase and a mobile phase. The stationary phase stays fixed, while the mobile phase moves and carries the sample.
Step-by-step lessons covering Edexcel A Level Chemistry Chromatography for A Level Chemistry. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. 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.