Gas
Liquid
Solid
NONE
Liquid Aerosol
Solid aerosol
Gas
(All gases are
mutually miscible)
Examples: fog, mist
Examples: smoke, air
particulates
Foam
Emulsion
Sol
Liquid
Examples:
whipped cream
Examples: mayonnaise, hand cream
Examples: milk, paint,
pigmented ink
Solid Foam
Gel
Solid Sol
Solid
Examples: aerogel,
styrofoam, pumice
Examples: butter, gelatin, jelly, cheese,
opal
Examples: cranberry glass,
ruby glass
Continuous media
Dispersed Medium
Colloids
(particle size: 1-1000 nm)
Detection
:
Tyndall effect
(light scattering)
(Note: scattering is weak if particles
are small relative to wavelength of light
-- visible light is 350-800 nm)
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Representation of two
colloidal particles
Destruction of stable colloidal suspension:
Coagulation
Heating
or addition of strong electrolyte
can cause coagulation.
Example
:
Soil deposition at river delta occurs when muddy fresh water hits
salt water.
Cottrell
*
precipitator installed in a smokestack.
Frederick G. Cottrell applied for a patent on
a device for charging particles and then
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- Spring '07
- Holcombe
- Chemistry, Colloid, Thixotropic Fluids, Solid aerosol Examples, Solid Sol Examples, particulates Sol Examples, cream Solid Foam
-
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