When I was a little girl I was always fascinated by the fact that Ivory soap could float. All that air inside, along with the extra moisture found in the little bar of soap, also causes a super fun reaction when you put Ivory soap in the microwave for this simple kids experiment: Ivory Soap Explosion.
If you’ve never done this one before, I guarantee it will get quite a reaction from all the kids, and even the adults! It’s good clean fun, with no waste. The soap is still usable once you’re finished!
To begin, we looked at the bar of Ivory soap. The kids felt it, smelled it, and examined it closely. I cut a small piece off the corner so they could see how Ivory soap floats. Then they tried a different type of soap, which, of course, sank right away.
After closely examining the bar we put the soap on a microwave-safe plate and put in in the microwave.
The kids watched in awe as the soap began to grow.
Within a minute the bar of soap had exploded to several times its usual size! We left the Ivory soap in the microwave for 2 minutes. Then we let it cool several minutes before touching it. (Remember, microwaves make things hot. Use caution! Break it in half and checked the insides before letting the kids handle it.)
My kindergartner started crumbling it up right away, anxious to get her hands in the stuff.
The preschooler started off a little more tentatively, but pretty soon the cars joined the mix — it was a blizzard!
They both played with the Ivory soap snow for almost an hour.
Then I got out the cookie cutters. We mixed a little bit of warm water into the soap until it was able to be molded. The kids used spoons to squish the soap into some cookie cutters. We left the cookie cutters on a piece of wax paper to dry, and once the soap was dry (overnight), we pushed out our new soap shapes.
As I said, it was good clean fun, and the soap is still usable!
Have your own clean fun with this simple kids science experiment and make an Ivory soap explosion.
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