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Complex species that contain ammonia molecules bonded to metal ions.

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Peroxide

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

Essential Oil

A plant extract that has a distinctive odour or flavour.

Heat of Fusion

The amount of heat required to melt one gram of solid at its melting point with no change in temperature. Usually expressed in J/g. The molar heat of fusion is the amount of heat required to melt one mole of a solid at its melting point with no change in temperature and is usually expressed in kJ/mol.

Fluorescence

Absorption of high energy radiation by a substance and subsequent emission of visible light.

Atmosphere

A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

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.

Foam

Colloidal suspension of a gas in a liquid.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Formula Unit

The smallest repeating unit of a substance. The molecule for nonionic substances