These are molecules that make your carrot orange. Others are extracted from natural sources, such as carotenoid (pronounced kuh-RAH-tuh-noid) molecules. Some colored molecules are synthetic (or man-made), such as "Yellow No. These are mixed into the material-whether ink or paint-to make the product. The variety of colors comes from colored molecules. I have circled this common dye on the diagram below.Do you love to use bright and vibrant colored art supplies such as markers or paints? Do you ever wonder how these colors are made? When we look at the chromatogram, we can see that there is a spot for ink A and ink C that is at the same height this means that there is a common dye in ink A and ink C. Therefore, if there are any spots at the same level/ height, we can say that there is a common dye in both of the inks. Common dyes will rise up the filter paper by the same amount. I am now going to look for common dyes in the 3 different inks. One of the spots for ink C is on the baseline, which means that one of the dyes in ink C is insoluble in the solvent used. There are 3 spots for ink C, which means that ink C is made out of 3 different dyes.There is 1 spot for ink B, which means that ink B is potentially a pure substance made out of one dye.
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