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A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

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Entropy

A thermodynamic state or property that measures the degree of disorder or randomness of a system.

Continuous Spectrum

Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.

Spectral Line

Any of a number of lines corresponding to definite wavelengths of an atomic emission or absorption spectrum, represents the energy difference between two energy levels.

 

Exothermicity

The release of heat by a system as a process occurs.

Kinetic Energy

Energy that matter processes by virtue of its motion.

Equivalence Point

The point at which chemically equivalent amounts of reactants have reacted.

Atomic Orbital

Region or volume in space in which the probability of finding electrons is highest.

Faraday's Law of Electrolysis

One equivalent weight of a substance is produced at each electrode during the passage of 96,487 coulombs of charge through an electrolytic cell.

Manometer

A two-armed barometer.

Solubility Product Principle

The solubility product constant expression for a slightly soluble compound is the product of the concentrations of the constituent ions, each raised to the power that corresponds to the number of ions in one formula unit.

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Boron Hydrides

Binary compounds of boron and hydrogen.

Disproportionation Reactions

Redox reactions in which the oxidizing agent and the reducing agent are the same species.

Common Ion Effect

Suppression of ionization of a weak electrolyte by the presence in the same solution of a strong electrolyte containing one of the same ions as the weak electrolyte.

Homogeneous Mixture

A mixture which has uniform composition and properties throughout.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Foam

Colloidal suspension of a gas in a liquid.

Salicylate

A salt or ester of salicylic acid.