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A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

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Endothermic

Describes processes that absorb heat energy.

Capillary Action

The drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces, or the depression of the surface of the liquid when cohesive forces exceed the adhesive forces.

Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Hydride

A binary compound of hydrogen.

 

Dipole

Refers to the separation of charge between two covalently bonded atoms.

Clay

A class of silicate and aluminosilicate minerals with sheet-like structures that have enormous surface areas that can absorb large amounts of water.

Hybridization

Mixing a set of atomic orbitals to form a new set of atomic orbitals with the same total electron capacity and with properties and energies intermediate between those of the original unhybridized orbitals.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Diamagnetism

Weak repulsion by a magnetic field.

Background Radiation

Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.