Natural Sciences

40 Examples of Colloids

The colloids are homogeneous mixtures consisting of particles very small, the size of 1 micron (microscopic) which are in solid form (dispersed phase) and which spread in a liquid substance or another been called disperser, dispersing or continuous phase.

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If we see the reflection of sunlight in a dimly lit place, we are likely to see a lot of dust particles floating in the air. This is an example of the colloid: the air is the disperser and the powder is in its dispersed phase.

Phases of a colloid

  • The dispersed phase: corresponds to the particles in the solutions, and consists of molecules single or giant molecules such as starch. They can appear as independent particles or in groups.
  • The dispersing phase: it is the substance in which the colloidal particles are distributed. This is the solvent in the solutions.

Many products that are used today are colloids: rubbers, plastics, paints, lacquers, varnishes; also some fruits that we eat and the clear soups that we prepare, among others.

Examples of Colloids

  • Painting
  • Jelly
  • Milk
  • Mayonnaise
  • Creams
  • Fruit juice
  • Pumice
  • Cream
  • Blood
  • ink
  • Cheese
  • Dust in the air
  • Soap foam
  • Shaving foam
  • Beer foam
  • Smoke
  • Fog
  • Clouds
  • Clay
  • Colored glasses
  • Insecticides
  • Cement
  • Meringue
  • Sand and sea
  • Foam
  • Butter
  • Ice creams
  • Toothpaste
  • Detergent
  • Mud
  • Colored water
  • Whipped cream
  • Urine
  • Jellies
  • Lubricant
  • Adhesives
  • Pearls
  • Woven bone
  • Jelly bean
  • Aerosol

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