RedCabbageMany naturally occurring compounds will change colour according to pH and it is possible to carry out an interesting investigation into this variety.

One of the best known, and best, indicators can be extracted from red cabbage. In this simple experiment, pupils extract theit indicator and then use it to test a variety of household substances.

Red Cabbage Indicator – Instructions

Red Cabbage Indicator – Risk Assessment

Image by Supermartl (Indikator-Blaukraut.jpg)  – Creative Commons License CC BY-SA 3.0