What Is Called an Atom

atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry. shell atomic model.

What were atoms originally called?

Early History of the Atom Matter is composed of indivisible building blocks. This idea was recorded as early as the fifth century BCE by Leucippus and Democritus. The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term.

What is the root word of atom?

An atom is the basic unit of an element. … The Greek root of atom is atomos, which means “indivisible,” since the scientists who first gave the atom its name imagined it couldn’t be split or divided into smaller pieces.