The item that will have a chemical reaction with iodine is cornstarch. When iodine interacts with cornstarch, it forms a blue-black complex, indicating a chemical reaction. The other items listed—powdered sugar, baking soda, and salt—do not produce a noticeable color change when mixed with iodine.
A Mystery Investigation Quick Check
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Question
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)
Responses
powdered sugar
powdered sugar
cornstarch
cornstarch
baking soda
baking soda
salt
1 answer