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An algebraic increase in the oxidation number, may correspond to a loss of electrons.

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xenon tetrafluoride

A colorless, crystalline compound, XeF4, prepared by heating a gaseous mixture of fluorine and xenon.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Le Chatelier's Principle

States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.

Lanthanides

Elements 58 to 71 (after lanthanum).

Dissociation

In aqueous solution, the process in which a solid ionic compound separates into its ions.

Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.

Bonding Pair

Pair of electrons involved in a covalent bond.

Detergent

A soap-like emulsifer that contains a sulfate, SO3 or a phosphate group instead of a carboxylate group.

Extrapolate

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

Structural Isomers

Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Chemical Kinetics

The study of rates and mechanisms of chemical reactions and of the factors on which they depend.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Basic Salt

A salt containing an ionizable OH group.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

Atomic Number


Integral number of protons in the nucleus, defines the identity of element.
 

Water Equivalent

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

Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Tyndall Effect

The scattering of light by colloidal particles.