The iodine changed color in one powder, but not in the other. Which do you think is probably a chemical change? The iodine and the cornstarch are probably the chemical change because the dramatic ...

3. Change in color. Whenever starch and iodine are mixed together, the chemical reaction that is taking place will produce a purple color. Because of this, we can use iodine to test for the ...

An unexpected finding: Rare iodine polymer discovery is key to starch-iodine mystery. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2016 / 08 / 160818165919.htm ...

This starch-iodine complex transformation discovered almost exactly 200 years ago, is used in classrooms as a foundational teaching tool in chemistry and biochemistry, ...