I'm taking online classes I need to know,

what is chemistry?

Besides a pain to study and ace it's tests, it is the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

its sorta like science but not quite. You learn more about matter, its properties, and what reactions substances have when combining some together