Acetic acid is an organic compound with the formula CH3COOH. It's what gives vinegar its sour taste and pungent smell.
Organic Compound: A compound that contains carbon atoms bonded together and can exist in living organisms.
Carboxylic Acid Group (-COOH): A functional group present in organic acids including acetic acid which gives them their acidic properties.
Hydrogen Ion (H+): An atom of hydrogen that has lost its electron and hence carries a positive charge; released by acids such as acetic acid.