I've seen videos about making DIY pH indicator experiments using red cabbage. Has anyone actually tried this? I want to do some chemistry experiments using common items from my kitchen, and this seems like a great way to teach about acids and bases. What household items can you test with a cabbage pH indicator?
Red cabbage pH indicator works really well. Chop the cabbage, boil it in water, then strain the purple liquid. It changes color based on pH: red for acids, purple for neutral, blue/green for bases. You can test vinegar (red), baking soda solution (blue/green), lemon juice (pink), etc. Great for DIY pH indicator experiments.
We've tested all sorts of household items with cabbage indicator. Coffee turns it reddish (acidic), soap solution turns blue (basic), even soda pop shows interesting colors. It's one of those chemistry experiments using common items that really demonstrates how chemistry is everywhere in our daily lives.
You can also make pH indicators from other plants like beets, turmeric, or blackberries. Each gives different color ranges. Comparing different natural indicators makes for a more advanced homemade science project. It shows how chemistry experiments without special equipment can still be quite sophisticated.
For educational home chemistry, we make a pH scale chart with the cabbage juice results. The kids draw the color changes and label where common household items fall on the scale. It turns kitchen pantry science projects into proper data collection and analysis. They learn that science isn't just about explosions, it's about careful observation.