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Very weak and very short-range attractive forces between short-lived temporary (induced) dipoles, also called dispersion Forces.

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Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Dispersed Phase

The solute-like species in a colloid.

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point

Radioactive Tracer

A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Hydration

Reaction of a substance with water.

Fatty Acids

An aliphatic acid, many can obtained from animal fats.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Emission Spectrum

Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states.