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An equilibrium in which processes occur continuously, with no net change. When two (or more) processes occur at the same rate so that no net change occurs.

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Integrated Rate Equation

An equation giving the concentration of a reactant remaining after a specified time, has different mathematical form for different orders of reactants.

Mixture

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

Hydration

Reaction of a substance with water.

Allotropic Modifications (Allotropes)

Different forms of the same element in the same physical state.

Capillary Action

The drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces, or the depression of the surface of the liquid when cohesive forces exceed the adhesive forces.

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.

 

Law of Conservation of Energy

Energy cannot be created or destroyed, it may be changed from one form to another.

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Hard Water

Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

Levorotatory

Refers to an optically active substance that rotates the plane of plane polarized light counterclockwise, also called levo.