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A class of enzymes found in bacteria within root nodules in some plants, which catalyze reactions by which N2 molecules from the air are converted to ammonia.

 

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Dimer

Molecule formed by combination of two smaller (identical) molecules.

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Fossil Fuels

Substances consisting largely of hydrocarbons, derived from decay of organic materials under geological conditions of high pressure and temperature (metamorphism) include coal, petroleum, natural gas, peat and oil shale.  For further information see Fuel Chemistry

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Salicylaldehyde

An oily, slightly water-soluble liquid, C7H6O2, having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.

Artificial Transmutation

An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.

Half-Reaction

Either the oxidation part or the reduction part of a redox reaction.

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Lewis Base

Any species that can make available a share in an electron pair.

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point