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Redox reactions in which the oxidizing agent and the reducing agent are the same species.

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Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Emulsifying Agent

A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Percentage Ionization

The percentage of the weak electrolyte that ionizes in a solution of given concentration.

Denatured

A commercial term used to describe ethanol that has been rendered unfit for human consumption because of the addition of harmful ingredients to make it sales tax-expempt.

 

Radioactivity

The spontaneous disintegration of atomic nuclei.

Covalent Compounds

Compounds containing predominantly covalent bonds.

Heat of Vaporization

The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

Law of Definite Proportions (Law of Constant Composition)

The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.