Science demonstrations you can do

One of the greatest things about science is that you can set up demonstrations / experiments that have unexpected results. And these demonstrations don't have to cost a lot of money. Often you can do them with things you have right in your kitchen.

There aren't a lot of great science demos to show the principles of cosmetic science (although I'm going to work on coming up with some). Here is a good list of kitchen experiments that you can try. It's from one of my favorite podcasts Naked Science.

Here are two demos related to surfactants.

1. Bubble color interference

2. Bouncing soap

Do you have any great sources for science demos? I'm always on the lookout for them. Leave a comment below.