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The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

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Amphoterism

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

Percent Composition

The mass percent of each element in a compound.

End Point

The point at which an indicator changes colour and a titration is stopped.

Oxide

A binary compound of oxygen.

Conformations

Structures of a compound that differ by the extent of rotation about a single bond.

Hydrate

A solid compound that contains a definite percentage of bound water.

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Alpha Particles

A helium nucleus.

Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Hydration Energy

The energy change accompanying the hydration of a mole of gase and ions.