An acid is a substance that donates hydrogen ions (H+) when dissolved in water, resulting in a pH lower than 7. Acids are crucial in many biological and chemical processes, influencing the structure and function of molecules in living organisms.
5 Must Know Facts For Your Next Test
Acids increase the concentration of hydrogen ions (H+) in a solution.
The pH scale measures acidity, with values below 7 indicating acidic solutions.
Common examples of acids include hydrochloric acid (HCl) and acetic acid (CH3COOH).
Acids can denature proteins and affect enzyme activity due to changes in pH.
In biological systems, acids play essential roles such as aiding digestion in the stomach.