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A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

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Levorotatory

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

Chemical Equilibrium

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.

End Point

The point at which an indicator changes colour and a titration is stopped.

Ion Product for Water

Equilibrium constant for the ionization of water, Kw = [H3O+][OH-] =1.00 x 10-14 at 25 °C.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

Collision Theory

Theory of reaction rates that states that effective collisions between reactant molecules must occur in order for the reaction to occur.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Hydrocarbons

Compounds that contain only carbon and hydrogen.

Equivalence Point

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

Heat

A form of energy that flows between two samples of matter because of their differences in temperature.