in addition to their pH levels, acids may be futher classified as organic or inorganic . organic acids contain carbon atoms.An example of kind of acid would be ascorbic acid, or vitamin C . Acetylsalicylic acid.Amino acids,Which contain nitrogen,are also considered organic acids.Amino acids are the building blocks essential for life.other acids, such as sulfuric acid and nitric acid, are inorganic acids.These acids generally do not contain carbon atoms.such acids are commonly used in things like metals,paints,plastics,and gasoline.Sulfuric acid is used in car batteries, while nitric acid is mostly used in car batteries, while nitric acid is mostly used in plant foods and explosives.