When he was three and he was going to school with me when I was teaching, Bridgette, my friend who watched him while I taught in the mornings made a paper mache volcano with him and added an old film canister at the top to make it "erupt" with baking soda and vinegar. This came to represent "science experiments" in Woody's mind, and though we've checked out many books with many other varieties of trials and demonstrations in them, and explained to Woody that many different types of structured investigations could be called "science experiments," he still comes back to this concept as a favorite.
So, Daddy Honey and Woody set out to see which acid that we had around the house was the most acidic. Woody thought they might be able to tell this by seeing which acid acted the most spectacularly with that ubiquitous and useful household base, baking soda.
They tried lemon juice, lime juice, apple cider vinegar, and white vinegar. Woody guessed lemon juice would be the most acidic because it tasted the most sour. He was encouraged in this theory by the fact that lemon juice made the biggest bubbles in the baking soda and reacted the fastest.
On the Internet, on a site explaining about pH levels, they found the following data:
pH levels of liquids in our test
lemon juice 2.0 -- 2.6
lime juice 2.0 -- 2.35
apple cider vinegar 3.1
white vinegar 2.4 -- 3.4
So while it's possible that our particular lemon juice was indeed the most acidic, there's really no way to tell without a litmus test. So, this week I'll be looking for one of those.
Also, we read a new book today called Catch Picasso's Rooster and were introduced to Franz Marc. We Googled his name and learned about expressionism at the turn of the 20th century.
My favorite painting of Marc's was Large Blue Horses.
Fox's was Foxes.
And Woody's was Fighting Forms (even before I told him the title).