Science with Soap

Homeschooling is a lot of fun. Here is a fun experiment that we found the other day, that I thought that I would share.

You have to use Ivory soap for this experiment to work. Ivory soap has a large amount of air in it (it gets whipped with big beaters apparently). Air, contains water moisture & microwaves “excite” those water molecules. This experiment shows you the microwaves radiation at work.

In terms of materials, it’s fairly easy. You need a microwave, bar of Ivory soap & plate.

Fluffy

We only zapped our Ivory soap bar for a minute at a time. We found that after one minute it had expanded so much that we had to stop it. Note that when you open the microwave it collapses a little.

There was still a fair amount of the bar left that had not expanded so we put it in for a further minute.

If you really don’t care about your microwave, I guess that you could do it all in one go, but we weren’t quite that game.

When the expanded soap first comes out it is a little rubbery in texture, but that soon changes to being fairly brittle/ flakey. The soap is still usable afterwards too, so you don’t have to throw it out.

SIDE NOTE: I would HIGHLY recommend getting unscented bars. It appears I accidentally bought the scented ones & I have to say that I am NOT a fan. You can’t buy just one bar on it’s own, but thankfully, we have other friends with kids, who are keen to have some.

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