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

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Activity Series

A listing of metals (and hydrogen) in order of decreasing activity.

London Forces

Very weak and very short-range attractive forces between short-lived temporary (induced) dipoles, also called dispersion Forces.

Distilland

The material in a distillation apparatus that is to be distilled.

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Intermolecular Forces

Forces between individual particles (atoms, molecules, ions) of a substance.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Aldehyde

Compound in which an alkyl or aryl group and a hydrogen atom are attached to a carbonyl group and a hydrogen atom are attached to a carbonyl group, general formula, O-R-C-H

 

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Ion Product for Water

Equilibrium constant for the ionization of water, Kw = [H3O+][OH-] =1.00 x 10-14 at 25 °C.

Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.