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Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.

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Neutron

A neutral subatomic particle having a mass of 1.0087 amu.

Galvanizing

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

 

Dumas Method

A method used to determine the molecular weights of volatile liquids.

Chain Termination Step

The combination of two radicals, which removes the reactive species that propagate the change reaction.

Autoionization

An ionization reaction between identical molecules.

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

Kinetic-molecular Theory

A theory, that attempts to explain macroscopic observations on gases in microscopic observations on gases in microscopic observations on gases in microscopic or molecular terms.

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

Electronic Geometry

The geometric arrangement of orbitals containing the shared and unshared electron pairs surrounding the central atom of a molecule or polyatomic ion.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.