In the activity below, you can try chromatography to separate colors in a mixture ... The reason why the colors separate has to do with the chemicals that make up the color, the water, and the paper.

Different methods of chromatography use different materials (besides paper) to separate mixtures. Scientists can make chromatograms of fall leaves to show how the different leaf pigments that give ...

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 ...

Two substances are likely to be the same if: they produce the same number of spots, and these match in colour the spots travel the same distance up the paper (have the same R f value) In this ...