Free Practice Tests
What is a Suspension?
A suspension is a heterogeneous mixture composed of fine solid particles
not dissolving in a liquid or gaseous substance. When the mixture is not disturbed, the solid particles,
which are usually larger than 1 micrometer, will settle to the bottom of the container
- they are sufficiently large for sedimentation. When agitated, the internal
phase (solid) is dispersed throughout the external phase (fluid).
Examples of Suspensions
(i). Harmatan haze - composed of tiny solid particles, such as dust particles, decaying organic matter, etc in air.
(ii). Muddy water – composed of mud particles in water.
(iv). Sand in water
(v). Fine soot or dust in air
(vi). Droplets of oil in air
- In suspensions, the solid particles do not dissolve in the liquid or gas - this makes them different from
- The solid particles are large enough to be seen with the optical eyes, and they settle to the bottom of the container if undisturbed – this makes them different from
- Suspensions can be separated by filtration, and by a membrane.
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