The pH scale measures the acidity or alkalinity of a substance, ranging from 0 to 14, with values below 7 representing acidity, above 7 representing alkalinity, and 7 representing neutrality.

However, water comes from different sources, like tap water or river water. These water samples have other substances dissolved in them. They might show up as slightly acidic or slightly alkaline ...

Most teas are mildly acidic. Acidity is determined by the pH scale. Neutral is around 7 and anything under a pH of 4 is considered very acidic. Some tests show that certain teas may be as low as 3. If ...

If a substance has a pH of 2, what does it mean -- acidic or alkaline? Read to know the answer! pH -- an abbreviation you might have come across many times but do you know what it means? Well, pH ...

Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units. Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale ...

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 ...