I have seen this experiment online a few times and decided to try it with the kids. So we took the plunge and gave it a shot. I wasn't sure how I felt about sticking a bar of soap in my microwave but what could it hurt, it was after all soap and would just wipe out. Luckily, we didn't have any problems and it all turned out great. The kids loved watching the soap expand. For more information on the how and the why of the experiment visit this web site. I simply put the bar in the microwave, turned my rotating plate off, and set the time for 3 minutes. It only took about 2 of the minutes to complete. When the soap stopped expanding I turned the microwave off.
SOME SIZE PERSPECTIVE
GLAD I CLEANED THE STOVE TOP :)
NOTE: There is air inside the soap when you take it out of the microwave, allow the soap to cool for a few minutes before breaking it apart.