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The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

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Heteronuclear

Consisting of different elements.

Electrophile

Positively charged or electron-deficient.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Evaporization

Vaporization of a liquid below its boiling point.

Insoluble Compound

A very slightly soluble compound.

Viscosity

Resistance offered by the molecules of a liquid to flow is termed as viscosity.

Hydrocarbons

Compounds that contain only carbon and hydrogen.

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Mass Action Expression

For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

Square Planar

A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.