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Colloidal suspension of a gas in a liquid.

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Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Emulsion

Colloidal suspension of a liquid in a liquid.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Endothermic

Describes processes that absorb heat energy.

Born-Haber Cycle

A series of reactions (and accompanying enthalpy changes) which, when summed, represents the hypothetical one-step reaction by which elements in their standard states are converted into crystals of ionic compounds (and the accompanying enthalpy changes.)

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

Atomic Radius

Radius of an atom.

Solvent

The dispersing medium of a solution.

Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.