29 Terms
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General chemistry
Industry: Chemistry
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General chemistry
Phenyl
Chemistry; General chemistry
A molecular group or fragment formed by abstracting or substituting one of the hydrogen atoms attached to a benzene ring.
Wetting
Chemistry; General chemistry
Covering with a surface with thin film of liquid. Liquid beads up on a surface if it cannot wet it.
Crystallite
Chemistry; General chemistry
A perfect crystalline part of a larger imperfect crystal. Real crystals are usually built of a large number of crystallites.
Line spectrum
Chemistry; General chemistry
A emission spectrum that contains very sharp peaks, corresponding to transitions between states in free atoms. For example, the line spectrum of hydrogen contains 4 sharp lines in the visible part ...
Specific gravity
Chemistry; General chemistry
The mass of a unit volume of a substance relative to the mass of a unit volume of water. Temperature must be specified when reporting specific gravities, since the density of the substance and of ...
Barometer
Chemistry; General chemistry
An instrument that measures atmospheric pressure. A mercury barometer is a closed tube filled with mercury inverted in a mercury reservoir. The height of the mercury column indicates atmospheric ...
Group
Chemistry; General chemistry
1. A substructure that imparts characteristic chemical behaviours to a molecule, for example, a carboxylic acid group. (also: functional group ). 2. A vertical column on the periodic table, for ...
