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A state of dynamic balance in which the rates of forward and reverse reactions are equal, there is no net change in concentrations of reactants or products while a system is at equilibrium.

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Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Concentration

Amount of solute per unit volume or mass of solvent or of solution.

Mass

A measure of the amount of matter in an object. Mass is usually measured in grams or kilograms.

Freezing Point Depression

The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point

Double Salt

Solid consisting of two co-crystallized salts.

 

Alpha Particles

A helium nucleus.

Equivalence Point

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

Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.

Particulate Matter

Fine divided solid particles suspended in polluted air.