Gas chromatography is a technique used to separate mixtures of gaseous chemical compounds based on differences in the compounds’ relative affinities for a solid (gas-solid chromatography ...

Liquid chromatography is a technique used to separate mixtures of chemical compounds or biomolecules in solution based on differences in the compounds’ relative affinities for a liquid mobile ...

Sometimes a scientist needs to figure out what is in a certain mixture of substances. One way they can do this is to use a process called chromatography. In the activity below, you can try ...

Chromatography is a technique used to separate soluble substances that have been mixed together. It’s normally used to separate coloured mixtures, like food colourings. We are going to use ...

A paper chromatogram can also be used to identify substances by comparing them with known substances. Two substances are likely to be the same if: they produce the same number of spots, and these ...

More on the prominence of petit verdot in a moment. The professional panel of judges for the Governor's Cup competition reviewed more than 490 entries, commenting on each wine’s appearance ...