My husband likes to listen to books on tape. He often listens to whole college courses on various subjects, like nano technology, greek history, genetics. He likes to know a little bit about everything. But he's not a know-it-all. He's a really cool guy.
Anyway, after listening to the genetics course he called me and told me to buy purple cabbage. I complied and then we had some fun. I boiled the cabbage and we put the juice in 7 jars.
Then we added vinegar (acid) and baking soda (base) in various quantities. I should have blogged this closer to when we did it because I don't remember the exact amounts. We have a ways to go before we are real scientists. Here is the basic idea from left to right: the control, about 1 c. baking soda with some water, a few tablespoons of baking soda with water, about 2 c. vinegar, 1 c. vinegar, I don't remember and a tablespoon or so of vinegar.
The basic idea is that color can change based on the pH level. I think it might have something to do with how color is manifest in nature. In any event, we had fun. Especially when we started mixing!
Too much fun! I loved the explosion the best!
ReplyDeleteLooks like the boys have two really terrific parents. How much fun you have together. It's really wonderful!
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