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The ratio of the density of a substance to the density of water.

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Coefficient of expansion

The ratio of the change in length or volumen of a body to the original lengthor volume for a unit change in temperature.

Adhesive Forces

Forces of attraction between a liquid and another surface.

Amine Complexes

Complex species that contain ammonia molecules bonded to metal ions.

Combination Reaction

Reaction in which two substances (elements or compounds) combine to form one compound.

Boiling Point Elevation

The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Copper

Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.

Isotopes

Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.