Science - Soap

Since the girls got back from the shore, they have been exploring all their *stuff* which was never used when we lived in the townhouse, due to the playroom being downstairs. They never wanted to go down there because it was too far away from all the adult action.

Today, we got out a glycerin soap making kit that we had stored, and made soap molds with decorative foam and rubber animals inside of them. It didn't take very long and it was an artistic venture that we turned into a scientific one.

Emma and I sat down and did some research on the science of glycerin and soap.

We ended up here , where we learned about why soap bubbles have color and how the color is created. Emma really *got* the concept of how soap color changes as the bubble itself thins. We also talked about how white light comes from all the different colors being present and when certain colors can reinforce or cancel each other out, letting other colors appear present. Very interesting stuff!

We also learned about sticky water and why water sticks to things, and more about surface tension, and how soap decreases surface tension, allowing soap bubbles to last longer than water bubbles.

It was a great science lesson and we had a blast! We also looked up what glycerin is, which led us to some other definitions.

I also found out that Emma knew not only about Google, but about AskJeeves, which I thought was pretty cool. I guess David taught her about that one!