I was playing around with cornstarch solution as I saw on T.V. that it had some really funny properties. It becomes hard when you hit it, but its soft if you go slow on it. I was preparing some at home in two containers. In one container however, I added too much water. Having finished the cornstarch, I couldn't add more. So to get rid of this extra water, I tried to heat the solution, but instead of returning to normal, globules formed in the solution as it became thicker. I'm finding it very difficult to make it normal. Why does this happen? What does adding extra water and then heating do to the mix?