On with the demonstration....
Begin with a bar of Ivory soap (or you may want to use a sliver of soap.... you'll see what I mean).
Make the appropriate observations of the soap.
Place the soap on a microwave-safe plate.
|It deflated a little at this point, because my camera's batteries died at this point and I had to wait for them to recharge.|
- A follow-up to the previously mentioned density experiment.
- A discussion of gas laws (Charles Law, specifically) - when a gas is heated, its volume will increase.
- A lesson on physical and chemical changes. Explosions are chemical changes by definition. This demonstration looks like explosion, but it's not. It's just a physical change.
*A funny story - I told my 5 year old that we were going to do a science experiment after dinner. He asked what we were going to do and all I would tell him is that we were using soap. Then I asked if he had any hypotheses about what would happen to the soap (knowing absolutely nothing about what we were going to do to it) and he said "It's going to explode." I think he was a little surprised at how close to right he was!