inside out-nutrition and digestion

In science we were testing different types of food for simple,complex,carbohydrates,protein.

method:

-place 2 ml of (bread,milk,egg,apple,patato,sugar) in a test tube

-add 3-5 drops of iodine and mix

-add the food

bread-complex

milk-non complex

sugar-non complex

patato-complex

egg-non complex

apple-non complex

my hypothesis was correct! how we found out is it was positive or negitive was because

complex

+black

- brown

my results showed the