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A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.

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Dispersing Medium

The solvent-like phase in a colloid.

Melting Point

The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Oxidizing Agent

The substance that oxidizes another substance and is reduced.

Octane Number

A number that indicates how smoothly a gasoline burns.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Valence Shell Electron Pair Repulsion Theory

Assumes that electron pairs are arranged around the central element of a molecule or polyatomic ion so that there is maximum separation (and minimum repulsion) among regions of high electron density.

 

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Unsaturated Hydrocarbons

Hydrocarbons that contain double or triple carbon-carbon bonds.