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mole, in chemistry

(Encyclopedia)mole, in chemistry, a quantity of particles of any type equal to Avogadro's number, or 6.02×1023 particles. One gram-molecular weight of any molecular substance contains exactly one mole of molecules...

mole, in zoology

(Encyclopedia)mole, in zoology, common name for the small, burrowing, insectivorous mammals of the family Talpidae, found throughout the temperate Northern Hemisphere. Moles are trapped as pests, although they prob...

mole, in anatomy

(Encyclopedia)mole: see birthmark.

Molé, Louis Mathieu, Comte

(Encyclopedia)Molé, Louis Mathieu, Comte lwē mätyöˈ kôNt môlāˈ [key], 1781–1855, French politician. He was made a count and minister of justice by Emperor Napoleon I and later served in several cabinets ...

sol, in chemistry

(Encyclopedia)sol, in chemistry: see colloid.

resonance, in chemistry

(Encyclopedia)resonance, in chemistry: see chemical bond. ...

naked mole rat

(Encyclopedia)naked mole rat, name applied to a species (Heterocephalus glaber) of small rodents found in E Africa, whose members—the only hairless rodents—live entirely in underground communities of 80 or more...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

radical, in chemistry

(Encyclopedia)radical, in chemistry, group of atoms that are joined together in some particular spatial structure and that take part in most chemical reactions as a single unit. Important inorganic radicals include...

suspension, in chemistry

(Encyclopedia)suspension, in chemistry, mixture of two substances, one of which is finely divided and dispersed in the other. Common suspensions include sand in water, fine soot or dust in air, and droplets of oil ...