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The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

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Meniscus

The shape assumed by the surface of a liquid in a cylindrical container.

Ionization

In aqueous solution, the process in which a molecular compound reacts with water and forms ions.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Binding Energy (nuclear binding energy)

The energy equivalent (E = mc^2) of the mass deficiency of an atom.  where: E = is the energy in joules, m is the mass in kilograms, and c is the speed of light in m/s^2

Nodal Plane

A region in which the probability of finding an electron is zero.

 

Lone Pair

Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

Supercooled Liquids

Liquids that, when cooled, apparently solidify but actually continue to flow very slowly under the influence of gravity e.g glass.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

xenon

A heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe, at. wt.: 131.30, at. no.: 54.