What is the difference between baking soda and baking powder?

Baking soda is the common name for a chemical compound called sodium bicarbonate. It usually comes in the form of a white fine powder. It's a versatile product that can be used for baking and cleaning. On the other hand, baking powder is made of baking soda plus cream of tartar and cornstarch. It's typically used for baking and helps your goodies come out light and airy.