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Equilibrium constant for the ionization of a weak electrolyte.

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Saturated Solution

Solution in which no more solute will dissolve.

Alkali Metals

Metals of Group IA (Na, K, Rb).

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

Heisenberg Uncertainty Principle

It is impossible to determine accurately both the momentum and position of an electron simultaneously.

Barometer

A device for measuring pressure.

Atomic Radius

Radius of an atom.

Critical Mass

The minimum mass of a particular fissionable nuclide in a given volume required to sustain a nuclear chain reaction.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Chain Termination Step

The combination of two radicals, which removes the reactive species that propagate the change reaction.

Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.