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The pressure required to liquefy a gas (vapor) at its critical temperature.

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Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Period

The elements in a horizontal row of the periodic table.

Electromagnetic Radiation

Energy that is propagated by means of electric and magnetic fields that oscillate in directions perpendicular to the direction of travel of the energy.

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.

Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.

London Forces

Very weak and very short-range attractive forces between short-lived temporary (induced) dipoles, also called dispersion Forces.

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Spectrochemical Series

Arrangement of ligands in order of increasing ligand field strength.