5 Examples of Chemical Suspensions

This is a close-up look at a suspension of mercury droplets in oil.
This is a close-up look at a suspension of mercury droplets in oil. DR JEREMY BURGESS, Getty Images

A suspension in chemistry is a mixture made up of particles in a fluid. Most of the suspensions you encounter in everyday life consist of solid particles in a liquid, but suspensions could also form from two liquids or even a solid or liquid in a gas. One key way to identify a suspension is that the components can separate over time. The particles do not dissolve in the fluid.

Here are 5 examples of suspensions:

  1. mercury shaken in oil
  2. oil shaken in water
  3. powdered chalk in water
  4. dust in air
  5. soot in air

Mixing or shaking needs to occur to form a suspension. Given time, suspensions usually separate on their own.

Compare With Colloids