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Mixing of metal with other substances (usually other metals) to modify its properties.

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Saturated Solution

Solution in which no more solute will dissolve.

Hydrometer

A device used to measure the densities of liquids and solutions.

Partial Pressure

The pressure exerted by one gas in a mixture of gases.

Fluids

Substances that flow freely, gases and liquids.

Leclanche Cell

A common type of dry cell.

Bronsted-Lowry Acid

A proton donor.

Degenerate

Of the same energy.

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)

Aromatic Hydrocarbons

Benzene and its derivatives.