Rating of difficulty: 1 out of a possible 10 VERY EASY and simple
Before you start make sure:
- Do not leave the microwave unattended during the activity.
- Although heating up soap in the microwave will not damage your microwave or the food you heat in it later, it will cause the microwave to smell like soap for a few hours and also your kitchen.
- Make sure your remove the packaging and put ONLY the soap in the microwave
- Bar of Ivory® soap (none other work)
- Place the soap on the plate (nonmetal) and put it in the microwave.
- Set the microwave for 2-3 minutes, turn it on, and watch the soap for the entire time.
What you should see is that the soap has turned into a foamy looking substance but still remains a solid.
The soap company adds air bubbles in the soap to save material and make a bigger profit. When the soap is heated instead of melting the air bubbles expand and cause the soap to change into that form.
One can determine how much air is put into the soap but a simple floating test. Just put the soap car into a bucket of water. If it floats it has a high air content if it sinks very low air content.