Yup. Another ad. This time it’s Red Cabbage Indicator. This lab extracts the pigment from red cabbage leaves and uses them as acid-base indicators. Indicators are more Chem and Bio—not Physics. But, if you’re making a cabbage dish, buy a red cabbage. Kiddos can prepare the indicator solution themselves in a blender—instructions here. Stand by for a strong odor.
We use powdered red cabbage indicator, instead—even easier to prep. I have used red cabbage leaves. The indicator solution is short-lived—only a few hours. I use powdered cabbage and mix up a batch whenever we do a pH lab. It’s just more convenient.
If you have one teen making solutions, use the cabbage leaves. Much cheaper.
No comments:
Post a Comment