finely divided colloid

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• colloid — 1. Aggregates of atoms or molecules in a finely divided state (submicroscopic), dispersed in a gaseous, liquid, or solid medium, and resisting sedimentation, diffusion, and filtration, thus differing from precipitates. SEE ALSO: hydrocolloid …   Medical dictionary

• colloid — 1. adjective /ˈkɒlɔɪd/ Glue like. 2. noun /ˈkɒlɔɪd/ a) A stable system of two phases, one of which is dispersed in the other in the form of very small droplets or particles. b) An intimate mixture of two substances one of which, called the… …   Wiktionary

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• aerosol — /air euh sawl , sol /, n. 1. Physical Chem. a system of colloidal particles dispersed in a gas; smoke or fog. 2. a liquid substance, as a disinfectant or deodorant, sealed in a metal container under pressure with an inert gas or other activating… …   Universalium

• dispersoid — A colloidal solution in which the dispersed phase can be concentrated by centrifugation. SYN: dispersion colloid, molecular dispersed solution. * * * dis·per·soid .sȯid n finely divided particles of one substance dispersed in another * * *… …   Medical dictionary

• Sand — For other uses, see Sand (disambiguation). Close up of sand from the Gobi Desert, Mongolia, showing a surface area of 1 square centimetres …   Wikipedia

• Mass driver — For fictional mass drivers, see List of electromagnetic projectile devices in fiction. Artist s conception of a mass driver for lunar launch A mass driver or electromagnetic catapult is a proposed method of non rocket spacelaunch which would use… …   Wikipedia

• Natural rubber — Rubber and India rubber redirect here. For other uses, see Rubber (disambiguation). This article is about the polymeric material natural rubber. For man made rubber materials, see Synthetic rubber. Latex being collected from a tapped rubber tree …   Wikipedia

• Smokeless powder — is the name given to a number of propellants used in firearms and artillery which produce negligible smoke when fired, unlike the older gunpowder (black powder) which they replaced. The basis of the term smokeless is that the combustion products… …   Wikipedia

• Davy Medal — Robert Bunsen and Gustav Kirchhoff, the first recipients of the award. They were awarded the medal for their researches discoveries in spectrum analysis . The Davy Medal is awarded by the Royal Society of London for an out …   Wikipedia

• latex — /lay teks/, n., pl. latices /lat euh seez /, latexes. 1. a milky liquid in certain plants, as milkweeds, euphorbias, poppies, or the plants yielding India rubber, that coagulates on exposure to air. 2. Chem. any emulsion in water of finely… …   Universalium