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The reaction of a substance with water or its ions.

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Metathesis Reactions

Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.

 

Chemical Periodicity

The variations in properties of elements with their position in the periodic table.

Electron

A subatomic particle having a mass of 0.00054858 amu and a charge of 1-.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Cathode Ray Tube

Closed glass tube containing a gas under low pressure, with electrodes near the ends and a luminescent screen at the end near the positive electrode, produces cathode rays when high voltage is applied.

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.

Gem-dimethyl group

Two methyl groups of the same carbon atom.

Debye

The unit used to express dipole moments.

Titration

A Procedure in which one solution is added to another solution until the chemical reaction between the two solutes is complete, the concentration of one solution is known and that of the other is unknown.

 

Endothermic

Describes processes that absorb heat energy.