We tried this experiment.... we filled white balloons with water and food coloring. Brooks didn't want to be apart of making these. He just wanted to be apart of them when we took the balloon away from the frozen ball. BOYS!!!
We put them out in the snow so they could freeze. It took a good day and a half for them to freeze all the way. We learned after the fact that we should have turned them half way through so they would be completely round. But they turned out prety cool anyway. The kids thought they were pretty cool.