Examples of colloids
These are just a few of the many examples of colloids, both man-made and naturally occuring.
- Man-made: Aerosol sprays, insecticide spray, smog. Natural: Fog, clouds.
- Solid aerosol:
- Natural: Smoke, dust.
- Man-made: Shaving lather, whipped cream.
- Man-made: Mayonnaise, cosmetic lotion, lubricants. Natural: Milk.
- Man-made: Paint, ink, detergents, rubber (a latex - also occur naturally).
- Solid foams:
- Man-made: Marshmallow, styrofoam, insulation, cushioning.
- Man-made: Butter, jelly.
- Solid sols:
- Man-made: Certain alloys. Natural: Pearl, opal.
Biological macromolecules and cells may be considered to be biocolloids and many foods are also colloidal in nature. Colloids are also an important feature of the natural environment.