Last year I wrote about a very simple experiment can be done using water, a plate and M&M’s candies. The experiment can be seen in the video below:
Dyes / Pigments
In this Activity, students dye fabric squares with two plant dyes: aqueous extracts of tea leaves and of marigold flowers. They investigate how the addition of iron to a dye bath affects the resulting color and fastness of the dyed fabrics and observe that the type of fabric affects the results. This Activity can accompany a discussion of the impressive array of chemicals produced by plants.