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Refers to crystals having the same atomic arrangement.

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Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Electron

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

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Solubility Product Constant

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

Percentage Ionization

The percentage of the weak electrolyte that ionizes in a solution of given concentration.

Chemical Equation

Description of a chemical reaction by placing the formulas of the reactants on the left and the formulas of products on the right of an arrow.

Deposition

The direct solidification of a vapor by cooling, the reverse of sublimation.

Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Law of Conservation of Energy

Energy cannot be created or destroyed, it may be changed from one form to another.