Chemistry Dictionary
Terminology "G"
- Gamma Ray
- High energy electromagnetic radiation.
- A highly penetrating type of nuclear radiation similar to x-ray radiation, except that it comes from within the nucleus of an atom and has a higher energy. Energywise, very similar to cosmic ray except that cosmic rays originate from outer space.
- For more information see Electrochemistry
- Galvanizing
- Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.
- Gangue
- Sand, rock, and other impurities surrounding the mineral of interest in an ore.
- Geiger counter
- A gas filled tube which discharges electriaclly when ionizing radiation passes through it.
- Gel
- Colloidal suspension of a solid dispersed in a liquid; a semirigid solid.
- Gem-dimethyl group
- Two methyl groups of the same carbon atom.
- Geometrical Isomers
- Compounds with different arrangements of groups on either side of a bond with restricted rotation, such as a double bond or a single bond in a ring; for example cis-trans isomers of certain alkenes.
- Stereoisomers that are not mirror images of each other; also known as position isomers.
- Graham's Law
- The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.
- Greenhouse Effect
- Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.
- Ground State
- The lowest energy state or most stable state of an atom, molecule or ion.
- Group
- A vertical column in the periodic table; also called a family.
- For more information see Periodic Tables
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