Element and Compound

Matter can be divided into elements and  compounds.


  1. An element is a substance that consists of only one type of atom.
  2. Element can be either atoms or molecules.
(Both the iron and oxygen are element because they consist of only one type of atoms)


  1. A compound is a substance composed of molecules made up of atoms of two or more elements.
  2. A compound is made up of either molecules or ions.

(Both the sodium chloride and carbon dioxide are compound because they consist of more than one type of atoms)