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The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

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Detergent

A soap-like emulsifer that contains a sulfate, SO3 or a phosphate group instead of a carboxylate group.

Melting Point

The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Overlap

The interaction of orbitals on different atoms in the same region of space.

Gas of rotten eggs

If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

Cyclotron

A device for accelerating charged particles along a spiral path.

Open Sextet

Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).

Carbonium ion

An orgainic ion carrying a positive charge on a carbon atom.

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Continuous Spectrum

Spectrum that contains all wave-lengths in a specified region of the electromagnetic spectrum.