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Mathematical method of treating particles on the basis of quantum theory, which assumes that energy (of small particles) is not infinitely divisible.

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Solution

Homogeneous mixture of two or more substances.

Electronic Transition

The transfer of an electron from one energy level to another.

Exothermicity

The release of heat by a system as a process occurs.

Yellowcake

The solid form of mixed uranium oxide, which is produced from uranium ore in the uranium recovery (milling) process.

Haber Process

A process for the catalyzed industrial production of ammonia from N2 and H2 at high temperature and pressure.

Evaporization

Vaporization of a liquid below its boiling point.

Element

A substance that cannot be decomposed into simpler substances by chemical means.

Amine Complexes

Complex species that contain ammonia molecules bonded to metal ions.

Half-Reaction

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

Activity of a component of ideal mixture

A dimensionless quantity whose magnitude is: equal to molar concentration in an ideal solution, equal to partial pressure in an ideal gas mixture, and defined as 1 for pure solids or liquids.