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The mass percent of each element in a compound.

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Nonbonding Orbital

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.

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.

Hydrolysis Constant

An equilibrium constant for a hydrolysis reaction.

Mass Action Expression

For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Saccharic acid

A white, needlelike, crystalline, water-soluble solid or syrup, C6H10O8, usually made by the oxidation of cane sugar, glucose, or starch by nitric acid. Also called "Glucaric acid."

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Endothermic

Describes processes that absorb heat energy.