A pH or acid-base indicator is a compound that changes color depending on the pH of the substance that is added to it. Acids and bases make pH indicators turn different colors. Two substances that ...

Acids and bases are classes of materials that have different properties. Acid-base indicators change color depending on whether they are in acids or bases. Red cabbage leaves contain a substance ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

Discover how red cabbage can act as a natural pH indicator, revealing whether substances are acids or bases through beautiful color changes. pH is a measure that tells us how acidic or basic a ...

Add universal indicator to the beakers of water. Add a small amount of each salt to a different beaker and stir to dissolve. Compare the colors to the reference set. Note: the NaCl will not be pH 7, ...

Figure caption, Colour chart of universal indicator colours at different ... is any compound formed by the neutralisation of an acid by a base or an alkali. It does not just refer to table salt.

Make an acid-base indicator. Dr Yan uses some very colourful ... When the water in the bowl has turned a vibrant purple colour, sieve it into a pouring jug. Pour approx. 1cm of purple liquid ...