Is it an acid, base, or neutral? Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties.

Make an acid-base indicator. Dr Yan uses some very colourful ... Visit BBC Webwise for full instructions Dr Yan uses a red cabbage to measure the acidity of different foods in his kitchen.

If desired, prepare red cabbage indicator by boiling red cabbage in distilled water and filtering.Provide several prepared reference pH solutions in a lighted test tube rack. Provide appropriate ...