Nearly everything at [HAD] is at least based on science in some way or another. If, however, you would like to do some actual scientific experiments with stuff around the house, [Observationsblog] ...

Colourful indicators from flower petals at the House of Science. Photo: SUPPLIED This week we conclude our home chemistry series with a lovely colourful experiment. The background Acid-base chemistry ...

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 ...

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 ...

Chapter 5 (Acids, Bases and Salts) of Class 7 Science NCERT Book (PDF) is available here for download in PDF format. Download and prepare for CBSE Class 7 Science exam. Chapter 5 (Acids, Bases and ...

A well-established technique, acid-base titration is an analytical method used to determine the concentration of an unknown acid or base. In practice, it involves adding a solution of known strength ...

Make an acid-base indicator. Dr Yan uses some very colourful science to find out what's acidic in his kitchen. Take 1/4 red cabbage. Finely slice the cabbage. Put all the chopped-up cabbage into a ...