psocoptera

Took the cabbage pH indicator/vinegar&baking soda show on the road while babysitting a young friend. Young friend & Q mostly saw it as a fun water-pouring activity in which things sometimes happened (color changing, fizzing) but Junie was able to figure out, in a solution where there had already been fizzing, but now the fizzing had died down, that she needed to add more acid rather than base to get it going again, based on the color being greenish rather than pinkish. I mean, I had to walk her through the reasoning, but she reached the conclusion herself. Baby's first titration! (Okay, no, I guess technically a titration is quantitative. But almost!)