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A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.

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Freezing Point Depression

The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point

Chemical Safety

People use chemicals every day for a wide array of purposes, which can include work and house hold duties. Many of us fail to realize that we are actually handling potentially deadly chemicals when we simply clean the bathroom or wash the car.

This brings to mind the reason why chemical safety is so important and why you should always use the chemicals that you own for their intended purpose only. Otherwise, the repercussions could be disastrous to say the least. There are specific things that you and those around you should do when handling, storing or using chemicals in nearly every form.

Heterogeneous Equilibria

Equilibria involving species in more than one phase.

Polarimeter

A device used to measure optical activity.

Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.

Sublimation

The direct vaporization of a sold by heating without passing through the liquid state.

Excited State

Any state other than the ground state of an atom or molecule.

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

Limiting Reactant

Substance that stoichiometrically limits the amount of product(s) that can be formed.

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.