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Specific distribution of electrons in atomic orbitals of atoms or ions.

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Periodic Table of Elements

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Corrosion

Oxidation of metals in the presence of air and moisture.

Supersaturated Solution

A solution that contains a higher than saturation concentration of solute, slight disturbance or seeding causes crystallization of excess solute.

Cloud Chamber

A device for observing the paths of speeding particiles as vapor molecules condense on them to form foglike tracks.

Combination Reaction

Reaction in which two substances (elements or compounds) combine to form one compound.

Chemical Periodicity

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

Lead Storage Battery

Secondary voltaic cell used in most automobiles.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Fat

Solid triester of glycerol and (mostly) saturated fatty acids.