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 ...

Neutralisation is the reaction of an acid with a base that results in the pH moving towards 7. It is a useful process that occurs in everyday life such as in the treatment of acid indigestion and ...

Learn what pH means and how it is measured in this KS3 chemistry guide from BBC ... name can be found from the name of the acid and metal. Acids and bases Acids, bases and alkalis are found ...

Is it an acid ... When instead a base gets in the water, a different reaction happens that changes the indicator molecule and it looks green. This activity is adapted from an activity that originally ...