1 We can observe 4 different dyes/pigments: yellow, pink, purple and blue
2 I think some of the dyes have different properties such as the amount of dye, the densities of the dye, or the chemical that is in the dye. This may cause the dye to separate into different categories.
3 Many of our peer’s chromatographs are the same. I went beyond the normal experiment and tried using a Vis-a-Vis pen to examine what colors it had. It had a different color scheme than the dyes of the food coloring.
The Rf value for the yellow is .36
The Rf value for the pink is .78
The Rf value for the purple is .89
The Rf value for the blue is 1
Here are some of my classmates chromatographs:
Jacob's Chem Blogs 