A pencil line is drawn, and spots of ink or plant dye are placed on it. There is a container of solvent, such as water or ethanol. A pure substance will only produce one spot on the chromatogram ...

Chromatography is a process by which compounds within a mixture are separated. Compounds are be separated by properties such as size, and how the compounds interact with the mobile and stationary ...

PAPER electrophoresis of proteins has on the whole proved to be a more satisfying means of separation than paper chromatography, owing to the physico-chemical properties of the proteins that make them ...

You will complete eight required core practical activities if you are studying GCSE Chemistry, and 18 if you are studying GCSE Combined Science (five of these are in Chemistry). You could be asked ...