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At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

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Faraday's Law of Electrolysis

One equivalent weight of a substance is produced at each electrode during the passage of 96,487 coulombs of charge through an electrolytic cell.

Galvanizing

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

 

Group

A vertical column in the periodic table, also called a family.

Bond Energy

The amount of energy necessary to break one mole of bonds of a given kind (in gas phase).The amount of energy necessary to break one mole of bonds in a substance, dissociating the sustance in the gaseous state into atoms of its elements in the gaseous state.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

Oxide

A binary compound of oxygen.

Barometer

A device for measuring pressure.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.