Valinnaiskemia: Värikkäät kävyt. Candy Chromotography. Ever wondered why candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography.
For this experiment you will need: • M&M or Skittles candies (1 of each color) • coffee filter paper • a tall glass • water • table salt • a pencil(a pen or marker is not good for this experiment) • scissors • a ruler • 6 toothpicks • aluminum foil • an empty 2 liter bottle with cap Cut the coffee filter paper into a 3 inch by 3 inch (8 cm by 8 cm) square. Next we’ll make solutions of the colors in each candy. Now we’ll “spot” the colors onto the filter paper. After all the color spots on the filter paper have dried, go back and repeat the process with the toothpicks to get more color on each spot.
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