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

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Freezing Point Depression

The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point

Cathode

Electrode at which reduction occurs in a cathode ray tube, the negative electrode.

Critical Pressure

The pressure required to liquefy a gas (vapor) at its critical temperature.

Heterogeneous Catalyst

A catalyst that exists in a different phase (solid, liquid or gas) from the reactants, a contact catalyst.

Alkenes (Olefins)

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

Neutron

A neutral subatomic particle having a mass of 1.0087 amu.

Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Concentration

Amount of solute per unit volume or mass of solvent or of solution.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.