Ivory Soap Explosion

For the past few months, I kept reading about the amazing results you get by sticking a bar of Ivory Soap in the microwave.  Then just a couple weeks ago, I saw it here and I knew I wanted to try it here with my kids.  

Let me tell you, if you don't have any Ivory soap in the house, pick it up on your next shopping trip, because this is what you'll get...


Pretty cool, isn't it?  And it's so super easy.  Just pop your soap in the microwave (it'll only work with Ivory), put it on high for about 2 minutes and watch it expand like crazy. (Note:  Different microwaves may be stronger than others.  Your soap may be finished expanding sooner, just watch it carefully )


Just heed my warning, though.  I didn't go back to reread the post where it directed you to cut your soap into pieces first.  I popped the whole thing in, then had to push my oohing and ahhing kids aside before the growing blob completely filled my small microwave!

She loved it!

Be careful at first, because it is fairly hot when it first comes out of the microwave.  However, it cools down quickly and can be easily handled.  I thought it would be sticky or slimy feeling, but it was actually dry and a bit crumbly.  The kids had fun touching it and breaking it apart.  (and it was really easy to get them in the shower with a promise that they could break off a clump of the exploded soap to use to wash up!)


NOTE:  For all of you who make your own laundry detergent, Jessica sent me this message on our Facebook page...

My daughter and I just tried the Ivory Soap Explosion..and LOVED it! We found another perk to this too: Once the soap has been expanded and the kiddos play with it..it turns to that fine powder. I make my own laundry soap....1 bar shaved soap, 1 cup washing soda and 1 cup borax. I will never shave my bar of soap again!! Expand, play, mix..that's my new laundry soap motto!!! 

I think I'm going to have to keep a few bars tucked away in the closet and pull it out whenever we need a little fun before bathtime.

Oh, and there's some scientific principles behind it too.  Basically, in the manufacturing process, tiny air pockets are formed in the soap (that's why Ivory floats).  When heated in the microwave, the moisture in those air pockets changes to a gas and expands.  (I told my kids it was similar to what happens with popcorn ~ but you can read more about the science part of it in more detail here at Steve Spangler Science

Sharing our cool soap experiment at: 

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