Synthetic colors are caused by a combination of red, yellow and blue colors are not the same ratio. Cause a lot of color. To extract the color with the filter paper is called "Petit Lieutenant rama uses chrome Super hanged" (Paper Chromatography). This is a mixture of substances in isolation, separate color or color bars. Relying on two properties: 1. the different types of substances can dissolve in the solvent (water) is different. 2. different types of additives can be absorb by adsorption (paper filter) is different.The substance dissolved in a solvent, well, most are not so good at absorbing far. Best compounds soluble in solvent is not good. Most of the time is a good absorbent, so close to the start point.
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