A colloid is a mixture of substances in which the particles of one substance are of greater than molecular size but are stabilized, at least for a time, with respect to forming larger particles or settling under gravity. The particles are referred to...

A very small particle dispersed in a medium. Colloidal particles are usually in the range of 1 micron to 100 microns. These particles have large surface area in relation to mass and this property is of great significance. Charges collect on the...

Refers to a solid that is very finely divided and suspended in an EMULSION. A colloidal suspension may appear to be a solution but the distinction can be tested, as suspended particles are unable to pass through a membrane whereas those in solution...

A substance comprising very fine particles generally taken as of a size under 100 nanometres in diameter (i.e. usually between 5–5,000 ÅNGSTRÖM units). See also:...

A colloid or colloidal dispersion is a type of homogenous mixture. A colloid consists of two separate phases: a dispersed phase and a continuous phase. In a colloid, the dispersed phase is made of tiny particles or droplets that are distributed evenly...

Many commercially important polymers are made and used as latexes, colloidal dispersions of polymer particles (typically 100nm diameter) in water. Although traditional polymer properties such as molecular weight and branching are important, often it is the colloidal properties which govern the success of...

Silver's anti-microbial properties have long been recognized, according to a Wall Street Journal article. For centuries, food was stored in silver containers to slow spoilage. Before penicillin, silver compounds were used to treat some burns and wounds. In recent years, colloidal silver has...