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)%0D%0AResponses%0D%0A%0D%0Asalt%0D%0Asalt%0D%0A%0D%0Apowdered sugar%0D%0Apowdered sugar%0D%0A%0D%0Acornstarch%0D%0Acornstarch%0D%0A%0D%0Abaking soda
3 answers
Among the items listed, cornstarch will react with iodine and produce a color change, forming a blue-black complex. Iodine can react with the amylose component of starch (found in cornstarch), which is why a color change occurs.
The other items, such as salt, powdered sugar, and baking soda, do not typically produce a noticeable color change when mixed with iodine.
The item that will have a chemical reaction with iodine and result in a color change is cornstarch.
