Lunedi

Today, we made a bath that included potassium iodide, iodine, and water. The packet we read about polyvinyl alcohol films people stretched out and then dyed their films by making a bath and putting it in there. The best way to stretch is was by using the metal clipboard clips and placing it on a metal surface so it sticks on there and stretches by itself. After stretching it, we put it in the bath and left it there for a few minutes. When we took it out, it looked like it expanded in the bath. One side was orangeish brownish while the other side was black. We think the orangeish was from the iodine.