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The spontaneous disintegration of atomic nuclei.

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Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.

Alkenes (Olefins)

Unsaturated hydrocarbons that contain one or more carbon-carbon double bonds.

Galvanizing

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

 

Distilland

The material in a distillation apparatus that is to be distilled.

Manometer

A two-armed barometer.

Hydrocarbons

Compounds that contain only carbon and hydrogen.

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Eluant or eluent

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

 

Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Nitric Acid

HNO3: A strong acid, it is toxic and can cause severe burns. Transparent colorless or yellowish, fuming, suffocating, caustic and corrosive liquid. Nitric acid boiling point is 83C. A 70 percent solution is used in the S.S.E. laboratory for junction depth measurements. Nitric acid is also present in the metal etch solution used for the Aluminum etch procedure.