acidity

Acidity refers to the level of acid in a substance, indicating how sour or sharp it tastes and how it reacts chemically. Acids are substances that release hydrogen ions (H⁺) in solutions, contributing to their acidity. The pH scale measures acidity, with lower values (below 7) indicating more acidic substances. Many natural foods, like citrus fruits, are acidic, while household items like vinegar are also acidic. In the body, maintaining proper acidity is vital, as it affects digestion and overall health. Acidity influences how substances interact, taste, and function chemically.