Kids love to compare and contrast things, and it’s one of the basic principles of the scientific method. Here at Kids Activities Blog, we have loved the erupting microwave soap experiment. And now we are taking the fun a bit further with some analyzing of how different soaps react to being microwaved.
Compare and Contrast Soap Experiment
- Ivory Soap
- Dial Soap
- Paper Towels
- Adult Supervision
Take the Ivory and the Dial Soap and compare the two:
- Notice one weighs much more than the other.
- Do they smell the same?
- How do they feel when touched?
- Can you make a dent with your finger nail?
Make a Prediction: How will each bar react in the microwave?
How to Microwave Soap
1. Put the dial soap on a plate with a paper towel. Microwave for two minutes. Make sure to let your child pull up a chair because this is pretty awesome.
2. When your Dial is finished take a look at it. Make note of any changes and how it appears.
3. Once it is cool, see if it still feels the same. What about the weight? My daughter thought the new texture was “flaky.”
Now Let’s Compare Soap Reactions
4. Next, we put the Ivory soap in the microwave. Make sure you put it in the very middle of the paper towel, because it is going to need a lot of room to grow.
5. Remember, set it for two minutes. This one will start growing a lot faster than the Dial did, but it’s important that we remain consistent (for the sake of science!).
6. Ivory will grow HUGE. It happens twice as fast, and grows way more than the Dial soap. It will probably get all over your microwave, but it’s just soap.
Now have your child compare and contrast the two.
Why did the Ivory grow so much more than the Dial? You can find a great explanation here— but don’t let your kids know the answer until they have come up with their own ideas!
More Kids Activities
Which other soaps would you use to compare and contrast in this experiment? We hope you enjoyed this microwave soap experiment for kids. For more experiments and awesome kids activities, we hope you will enjoy these fun ideas: