I was a chemistry major in college, and my husband Mark majored in engineering. So like the dorks that we are, we got Isaac some simple science kits for Christmas from Target. His Auntie Aliyah also bought him the “Everything Kids’ Science Experiments Book”, so lately he has been very interested in doing experiments.
Unfortunately, these last couple weeks have been rather hectic. All weekend he has been begging me to do an experiment with him. I had to work this weekend, so there just wasn’t much time.
Finally, just before bedtime tonight, we had about 30 minutes to spare. I asked him what kind of experiment he wanted to do. “Chemistry!” he said. Be still, my heart!
He went through his chemistry set and pulled out the plastic test tubes. “I want to do something with these,” he said. One problem: although the chemistry set included test tubes, none of the experiments in the instruction manual included them! So we turned to good old Google. We found this neat website and decided to try “The Liquid Rainbow”.
It turned out very well, and he really enjoyed it! The liquid rainbow only works if the liquids are put in the test tube in order of decreasing density. I explained this to Isaac. Since we started out with approximately equal volumes of each liquid, I asked him to guess which was heaviest or densest. He tried picking up each container of liquid. “Can you tell by picking them up?” I asked. “No,” he said, “I’m too strong.”
I told Isaac that every good scientist needs a lab notebook (or used to, anyway, when I was in college):
Here are our end results. If you look closely, the tube on the right has our “liquid rainbow”:
I know I should probably have him wear safety goggles, but we don’t have any yet. I’m sure I can find some online for future experiments. And maybe I can find him a small white labcoat. I told you I was a dork.
Isaac has already asked me if we can do another experiment tomorrow night!