Here's what you need:
- whole milk
- food coloring
- liquid dish soap
- pie plate
Pour the milk into the pie plate just enough to completely cover the bottom. Let it settle for a minute. Put a drop (or two) of each color of food coloring into the milk, near the center (but not on top of each other). Dip the end of your q-tip into the liquid dish soap and put that right into the center of the milk. Hold it there and watch the magic. Younger kids will want to stir it, but encourage them to just hold the q-tip in one place. Or pick up the q-tip and place it in another part of the plate to see what happens.
What is happening:
The fat and protein molecules in the milk are very sensitive to change. When you add the soap to the milk the molecules go crazy and move around. By adding the food coloring we can actually see how these fats and proteins act when combined with soap.
What happens if you try it in water or low-fat milk?
P.S. If any of you locals are ever interested in fun liquid nitrogen experiments (ice cream, perhaps?) let me know. I can totally hook you up!
Kiasa, I love this. Do you mind if I feature it (with credit back to your blog, of course) on our Second Story Window blog? In fact, if you're ever up for guest posting about at home/ classroom science experiments, I'd love it! But I know you have your hands full right now! :)ReplyDelete
your kids are so lucky! when i was growing up, our science experiments were our mom saying "why don't you see what happens when you push the dust into a pile using this broom?!?"ReplyDelete
sounds like funn im very crafty, so i would love doing this even with out kids. haha!! natthefatrat you made me laugh aww thanksReplyDelete
Emily, I'll see if I can put something together for a guest post. I'd love to do it, if my kids let me. :)ReplyDelete
Natalie, that's hilarious and something I should do more with my littles.
newbeginings, I hope you try it out. It is seriously fun even without kids!
Check out my website and blog at chatmemore.comReplyDelete
That looks like such a great idea!ReplyDelete
I saw some old pics on Design Mom's blog of Maude's bday party and Googled you for more info...and here you are. I'd love to do some of these experiments with my little ones. Are there more that are tagged "science" or otherwise? Thx
Hi Pamela, I'm working on a few more science posts, but they are taking longer than planned. (Doesn't everything with three little kids?!)ReplyDelete