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

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Vapor

A gas formed by boiling or evaporating a liquid.

Exothermicity

The release of heat by a system as a process occurs.

Enzyme

A protein that acts as a catalyst in biological systems.

Boron Hydrides

Binary compounds of boron and hydrogen.

Polarization

The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.

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.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Titration

A Procedure in which one solution is added to another solution until the chemical reaction between the two solutes is complete, the concentration of one solution is known and that of the other is unknown.

 

Osmotic Pressure

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

Periodic Table of Elements

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.