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The heat content of a specific amount of substance, defined as E= PV.

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Sublimation

The direct vaporization of a sold by heating without passing through the liquid state.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Electrical Conductivity

Ability to conduct electricity.

Bronsted-Lowry Acid

A proton donor.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Ideal Gas Law

The product of pressure and the volume of an ideal gas is directly proportional to the number of moles of the gas and the absolute temperature.

Hund's Rule

All orbitals of a given sublevel must be occupied by single electrons before pairing begins.

Energy

The capacity to do work or transfer heat.

Half-Life

The time required for half of a reactant to be converted into product(s). The time required for half of a given sample to undergo radioactive decay.

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.