I love candy labs. Have you tried Candy Chromatography? Here are chromatography instructions with background information about food dyes. Try doing chromatography with water-based markers, M&Ms and Skittles, Food Dyes, or Black Ink Pens. Use thicker coffee filters to make the strips. Later this year, the Bio class is going to do this lab, Plant Pigment Chromatography, with fresh spinach leaves.
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