When an acid is added to an alkali the pH of the acid increases towards 7 and the pH of the alkali decreases towards 7.

The pH scale shows how acidic a substance is. Learn what pH means and how it is measured in this KS3 chemistry guide from BBC Bitesize. Neutralisation reactions Acids and alkalis react together in ...

The “alkaline” in alkaline water refers to its pH level. A pH level is a number that measures how acidic or alkaline a substance is on an approximate scale ... the acid in your body, though ...