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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.

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Artificial Transmutation

An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Line Spectrum

An atomic emission or absorption spectrum.

Insoluble Compound

A very slightly soluble compound.

Amine Complexes

Complex species that contain ammonia molecules bonded to metal ions.

Crystalline Solid

A solid characterized by a regular, ordered arrangement of particles.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Coordination Sphere

The metal ion and its coordinating ligands but not any uncoordinated counter-ions.

Polyene

A compound that contains more than one double bond per molecule.

Reactants

Substances consumed in a chemical reaction.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Ion

An atom or a group of atoms that carries an electric charge.

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Extrapolate

To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

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.

Viscosity

Resistance offered by the molecules of a liquid to flow is termed as viscosity.