A chemistry class is experimenting with iodine to see which common white powder items will react and make the iodine change color. Which item listed will have a chemical reaction with iodine?(1 point)

Question

Responses

salt
salt

cornstarch
cornstarch

baking soda
baking soda

powdered sugar

Answer 1

Among the items listed, cornstarch will have a chemical reaction with iodine, producing a blue-black color. This reaction occurs because iodine interacts with the starch molecules, forming a starch-iodine complex. The other items—salt, baking soda, and powdered sugar—do not typically react with iodine in a way that produces a color change.