Acidity

Acidity is a chemical property that describes the presence of acid in a substance. An acid is a substance that can donate a proton or accept an electron pair in reactions. Acidity is often measured using the pH scale, which ranges from 0 to 14. Substances with a pH less than 7 are considered acidic, with lower values indicating stronger acidity. Acidity can affect the taste of food and beverages, making them sour, and it plays a crucial role in various chemical reactions, industrial processes, and biological functions. Common examples of acidic substances include lemon juice, vinegar, and stomach acid.