Colloid 3
Colloid 3 : A state of subdivision of matter which consists either of single large molecules or of aggregations of smaller molecules dispersed to such a degree that the surface forces become an important factor in determining its properties. The size and electrical charge of the particles determine the different phenomena observed with colloids, e.g., Brownian movement. The sizes of colloids range from 1 x 10-7 cm to 5 x 10-5 cm (0.001 to 0.5 microns) in diameter, although the particle size of certain emulsoids can be in the micron range. (Bul D11)
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