Thanks for the response. We used pure starch and were successful. We learned the carbohydrates in starch were made up of carbon hydrogen and oxygen. My original idea was that since the experiment included water anyways that the hydrogen and oxygen components of the starch carbohydrate...
I've been teaching my daughter about the elements and am demonstrating the iodine+water+starch="clock" reaction. In an effort to provide accurate and straightforward information I am wondering that since starch is essentially carbon if pure carbon can be substituted for starch or if the starch...