Corn starch and Iodine experiment

Today we did an experiment with a baggy, corn starch, water and iodine. First, we filled the baggy with one spoonful of corn starch. Next we added water to the baggy with the corn starch in it, this caused the water to have a milky color. Then we submerged the baggy into water that had iodine in it. After we left it in there for fifteen minutes the water in the baggy started to look a yellowish brown. This experiment has taught me how powerful some chemicals can be.