When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___.
All matter is made up of minute particles. Atoms were considered to be the tiniest particles that cannot be divided further. The term 'atom' is derived from a greek word 'atomos' which means 'indivisible'. Atoms can, however, be broken into smaller particles: electrons, protons, and neutrons. But, the atom is the smallest particle which has the property of the element. Hence, atoms are the smallest unit of a matter.