Ivory Soap Experiment

Science Experiments for Kids

I have mentioned before that Kaleb loves science experiments.  When I came across numerous videos on youtube all about the ivory soap experiment, I knew we had to try it.  This is one of the simplest experiments that you can do with your kids, and it is virtually mess free.

 

Ivory Soap Experiment Supplies:

  • a microwavable plate
  • fresh bar of Ivory soap
  • a microwave

 

We started our experiment by dropping our Ivory soap bar into water.  The kids were amazed that a full sized Ivory bar floated and an almost used up bar of a different brand sunk.  It would have been better to have another full sized bar, but that was the only other of bar of soap I could find in a hurry.  We are more a liquid soap family.  If you are interested in why Ivory soap floats, you can find one explanation here.

Ivory Soap Experiment

We placed the Ivory soap bar in the center of a plate and into the microwave.  All the kids stood on a bench so they could have a good view of what was happening in the microwave.  You will want to make sure everyone can see before you begin because it is amazing!

 

Experiment

Cook the bar for 2 minutes on high in the microwave.  Ours started to change after about 20 seconds and continued for the full 2 minutes.  When your soap cloud is finished, let it cool before letting the kids touch it.

 

The kids were totally amazed by the soap cloud.  Our Ivory soap totally transformed.

I didn’t want to waste a whole bar of soap, even for a cool experiment.  So instead of throwing the soap cloud in the garbage, we decided to use it in a fun new recipe that will incorporate our soap “cloud”.  We did our experiment one day and let it sit on the counter overnight before we created our Fluffy Bath Tub Paint.   Click on the link for the recipe.

For more simple kid experiments, check out our:

Walking on Eggs

Packing Peanut Experiments

Exploding Peep Geysers

Shooting Water Experiment

Until next time... xoxo Tammy!  

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39 thoughts on “Ivory Soap Experiment

  1. Pingback: Fluffy Bathtub Paint | Housing a Forest

  2. So I found to post and thought it was a great amazing experiment but as a college student I didn’t have a bar of ivory soap so my roommates and I tried this with Zest and Dial . They only need little bit over an minute and didn’t get as big but This is a sweet experiment that I will remember when I have my own classroom in the future! Tomorrow we are going to compared Ivory soap to our other two soap clouds.

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  4. I think my favorite part of this post is when your daughter asked, how did WE do that. You can tell that you do a lot of fun things with them and they enjoy taking ownership of them!

  5. So I had seen this post, but didn’t have any Ivory soap (we’re a liquid soap family too). But then last night i saw that I had some old bars still wrapped up in my bathroom. It just so happened to be Ivory! I was excited. Well as I unwrapped the soap I saw that it was from 2003…..just a little old. Apparently the age of the soap affects the experiment becuase it didn’t work….So my kids are now begging me to make a special trip to the store go get some soap that isn’t too old and try again. Thanks for peaking our interest :)

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  8. This is so amazing! I am a preschool teacher and do a “SCIENCE WEEK” each year with my class- I will DEFINITELY be adding this experiement to my list for next week when explaining “heat”! Thanks for sharing! :-)

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  11. Is there a way I can make this a poster board science project? I thought I would take photos of the floating and the “melting” and tie it into the density and bouncy etc. How do I do this?

    Thank you for any help. =))))

  12. Anyone know what soap properties/ingredients are needed for this to work? I can’t get Ivory soap in Australia and the kids would LOVE to do this experiment! I’m not keen on buying one of everything, to try, so any suggestions would be great!

  13. I found your website on Pinterest. I LOVE all the creative ideas you have for kids – art & experiments. This will keep us busy all summer! Thanks for the inspiration!!!

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    • Our house did have a soap smell that lingered for a few hours. But I did not notice the microwave smelling or the food cooked in it tasting like soap. I would be interested to hear others thoughts as well.

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