A strong acid is a type of acid that completely dissociates into its ions in water. This means that when a strong acid is dissolved, it releases a high concentration of hydrogen ions (H⁺), which makes the solution very acidic. Common examples of strong acids include hydrochloric acid, sulfuric acid, and nitric acid. Strong acids have a low pH, typically below 3, and can conduct electricity well due to the presence of free ions. They are often used in various industrial processes, laboratory experiments, and even in some household products. However, they can be corrosive and should be handled with care.