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The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

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Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.

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.

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Homonuclear

Consisting of only one element.

Ostwald Process

A process for the industrial production of nitrogen oxide and nitric acid from ammonia and oxygen.

Water Equivalent

The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.