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States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.

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Ionic Geometry

The arrangement of atoms (not lone pairs of electrons) about the central atom of a polyatomic ion.

Detergent

A soap-like emulsifer that contains a sulfate, SO3 or a phosphate group instead of a carboxylate group.

Do you know: some mosquitoes bite people because of their clothes

If you have ever been bitten by a mosquito, someone nearby surely gave you an explanation of why the nasty insect decided to spoil your day. Maybe they told you that you smelt good, or you had a certain type of blood or that in that shirt you looked like a potential victim.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Fuel Cells

Voltaic cells in which the reactants (usually gases) are supplied continuously.
A voltaic cell that converts the chemical energy of a fuel and an oxidizing agent directly into electriacl energy on a continuous basis.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Lone Pair

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

Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Bronsted-Lowry Acid

A proton donor.