If you tried brown M&M's, you probably saw that they contain a red dye (the same one as red M&M's) and a blue dye. Green M&M's also use two dyes, a yellow dye and a blue dye, although the latter ...

Paper chromatography close chromatography Chromatography is used to separate different substances ... and spots of ink or plant dye ... red, blue and yellow are three pure substances. The sample ...

Paper chromatography. 1. Spots of ink or plant dye are placed on a pencil line. ... In this chromatogram, the brown ink is made of a mixture of the red, blue and yellow inks.

Visible light—light that the human eye can see—is made up of the wavelengths of all the colors. You may have heard of these wavelengths shortened to ROYGBIV, which stands for red, orange, yellow, ...