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

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xylidine

Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.

Accuracy

How closely a measured value agrees with the correct value.

Intermolecular Forces

Forces between individual particles (atoms, molecules, ions) of a substance.

Gel

Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Alkaline Earth Metals

Group IIA metals

Oil

Liquid triester of glycerol and unsaturated fatty acids.

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.

Exothermicity

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

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Lanthanide Contraction

A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Degenerate

Of the same energy.

Reverse Osmosis

Forcing solvent molecules to flow through a semipermable membrane from a concentated solution into a dilute solution by the application of greater hydrostatic pressure on concentrated side than the osmotic pressure opposing it.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Vapor

A gas formed by boiling or evaporating a liquid.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.