What is an atom?

1 Answer
Feb 21, 2018

An atom is a small structural element of matter that is the smallest that has the properties of an element.

Explanation:

Atoms are made of protons, neutrons, and electrons that in turn are made of even smaller pieces.
Atoms are the basic material that makes up every day matter. Atoms are the smallest units that make up elements. An element like Helium is made of Helium atoms.
Atoms also combine to make up molecules, like Carbon Dioxide and Water.