Question

define pure substances and mixture​

Answer 1

Explanation:

a pure substance consists of a single type of particles.

mixture contains more than one substance.

Answer 2

$\huge\mathfrak{\underline{\underline{Pure\:Substances:-}}}$

Pure substance is the one which is made up of only one kind of particles (i.e atoms or molecules).

Example:- Hydrogen, oxygen etc.

$\huge\mathfrak{\underline{\underline{Mixtures:-}}}$

Mixture is a substance which consists of two or more elements or compounds not chemically combine together.

Example:- Salt solution etc.