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A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

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Theoretical Yield

Maximum amount of a specified product that could be obtained from specified amounts of reactants, assuming complete consumption of limiting reactant according to only one reaction and complete recovery of product.

Atomic Radius

Radius of an atom.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Heat of Vaporization

The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

Electrodes

Surfaces upon which oxidation and reduction half-reactions, occur in electrochemical cells.

Law of Conservation of Energy

Energy cannot be created or destroyed, it may be changed from one form to another.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Hydrolysis

The reaction of a substance with water or its ions.

Dispersed Phase

The solute-like species in a colloid.