Impure substance or Mixture has two or more than two types of substances. Example: Mixtures
The Mixture: The Mixture is the physical combination of two or more types of substances.
Example: Air is a mixture of gases, dust particles and water vapour.
Types of Mixtures
Homo means equal, thus such mixture contains equal distribution of particles. We cannot see particles of such mixture by naked eyes. All solutions are Homogeneous mixtures.
Example : Acid solutions, Salt solution etc
What is a solution?
Solution is a combination of solute and solvent.
Solute: substance with smaller amount in a solution.
Solvent: substance with larger amount in a solution.
Example: If Sulphuric acid is dissolved in water, sulphuric acid is a solute and water is a solvent.
Hetero means unequal, such mixture contain unequal distribution of particles and we can see the particles either by naked eyes or microscope.
Example: colloid and suspension
Read other MYP chemistry topics here.