What Are The Two Types Of Pure Substances

Classification Of Pure Substances

Chemical substances are made of atoms and molecules. An atom is the smallest particle of a substance. Atoms may or may not exist independently. Molecules are formed when two or more atoms join together. Molecules can exist independently. Chemical substances can be divided into two major groups: pure substances and mixtures. Pure substances can be elements or compounds.

An element is a substance that is made up of only one kind of atoms and cannot be broken down into simpler substances by chemical means. For example, silver, gold, aluminium, hydrogen, oxygen,