Eating with Your Eyes is a ChemMatters article with an easy lab; the experiment requires food coloring and cola. (This page has the Oct 2015 questions and answers for the article). Finally watch this video to make your own natural food dyes.
Want to extend your lesson? The Nature of Dye (or here) uses cochineal bugs to test acids and bases.
You can also use the bugs to dye fabrics. Here is an excellent slide deck about dyes. Dye Chemistey often appeals to young women. Let your teen make a deep dive into dying fabrics this summer. This could be a project or even an excellent chemistry unit. Have a blast!
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