This is a classic chemical reaction to use in your science class. Starch and iodine mix to cause a color change. Discuss with aspiring chemists the chemical and physical changes that occur as you demonstrate.

Find out what happens when you put a bar of Ivory soap in a microwave. [1:16]

Using food coloring, this color experiment demonstrates how dish soap and milk behave when they come into contact with each other. [2:28]