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 ...

Beets, and other fruits and vegetables like blackberries, plums, and blueberries are natural indicators of ... they change color at a pH of nine — the same pH level of infected human skin ...

If universal indicator is added to a solution it changes to a colour that shows the pH of the solution. Universal indicator is a mixture of a variety of other indicators and can be used to measure ...

Save guides, add subjects and pick up where you left off with your BBC account. Pure water is neutral. However, water comes from different sources, like tap water or river water. These water ...