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Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

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Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.

 

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

Mechanism

The sequence of steps by which reactants are converted into products.

Effective Molality

The sum of the molalities of all solute particles in a solution.

Coulometry

The quantitative application of Faraday's Law to the analysis of materials. The current and time are the usual variables measured.

Nitrogenases

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.

 

Particulate Matter

Fine divided solid particles suspended in polluted air.

Enantiomer

One of the two mirror-image forms of an optically active molecule.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Basic Salt

A salt containing an ionizable OH group.