Our body is a mixture, not a compound.

• A compound has a fixed chemical formula (like H₂O for water), and its components are chemically bonded in fixed proportions.

• Our body is made up of many different substances—water, proteins, lipids, carbohydrates, minerals, and more—all physically combined, not chemically bonded in a fixed ratio.

So, the human body is a complex mixture of many compounds and elements.