*Suspensions :–
A suspension is a heterogeneous mixture in which the small particles of a solid are spread throughout a liquid without dissolving in it. The particles have a tendency to settle down at the bottom of solvent and can be filtered out, because their size is bigger than the size of the pores of filter paper.
Ex:(1) Chalk-water mixture is a suspension of fine chalk particles in water.
(2) Muddy water is a suspension of soil particles in water.
*Properties of a suspension :
1.A suspension is a heterogeneous mixture.
2.The size of solute particles in a suspension is quite large. It is larger than 100nm in diameter.
3.The particles of a suspension can be seen easily.
4.A suspension scatters a beam of light passing through it, because it's particles are quite large.
5.The particles of suspension settle down, when the suspension is kept undisturbed.
6.The process of setting of suspended particles under the action of gravity is called sedimentation. So suspensions are unstable.