substance is something that occupies space and memilki mass. Substance can be DaLA three states, ie, solid, liquid, and gas. Substance composed of particles that distance and freedom of motion is different. Materials can be either elements or compounds. Atom word itself was first proposed by Democritus at about 400 BC. The word atom comes dati a word-and tomos (atomos), which means it is not divided or can not be divided again.