Pajama Scientists: Iodine Starch Indicator Test

The Pajama Scientists use iodine to test for the presence of starch in a few foods found around the kitchen. Bread, rice, salt, sugar, taco shell, pasta, apple, and walnut shell. When iodine encounters starch, it changes from it's usual orangish-red-rusty colour to a stunning blue-black colour. Some of these foods don't change right away either, they take some time which was curious for us.