Question

List any three points of differences between true solution, colloidal solution and suspension

Answer 1

We can classify substances into true solution, collloidal solution and suspension depending upon the properties

True solution	Colloidal solution	Suspension
Solute dissolves in a solvent and give rise to true solution and solute particles have size range less than 1 nm size	Colloidal particles have size in between 1-1000 nm size	Particles are suspended in a medium which are large enough to see with the naked eye since particles are having size greater than 1000 nm
Particles are too small to see with the naked eye and do not settle down when left undisturbed	When colloidal solution left undisturbed, particles do not settle down	When suspension left undisturbed, particles settle down
We can not separate the dissolved components by physical methods like ordinary filters	We can not separate the colloidal particles with ordinary filter but ultrafiltration can be employed using specially designed filters	We can separate the suspended particles using ordinary filters since the particles are large, that not allow to pass through the filters
Example: Sugar solution	Example: Milk	Example: Sand in water