Question

define the following terms. atom

Answer 1

An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

Answer 2

Atom is the smallest particle of element which contains all the properties of a chemical element.Every solid, liquid, gas is composed of neutral or ionized atoms. 

Hope this helps you