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Involves a change in the composition of a nucleus and can evolve or absorb an extraordinarily large amount of energy.

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Single Bond

Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.

Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Fat

Solid triester of glycerol and (mostly) saturated fatty acids.

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.

Galvanizing

Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Polymer

A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

Distillation

The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.

Tyndall Effect

The scattering of light by colloidal particles.

Formula Weight

The mass of one formula unit of a substance in atomic mass units.