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The amount of heat absorbed in the formation of one mole of a substance in a specified state from its elements in their standard states.

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Optical Activity

The rotation of plane polarized light by one of a pair of optical isomers.

 

First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Crystal Field Theory

Theory of bonding in transition metal complexes in which ligands and metal ions are treated as point charges, a purely ionic model, ligand point charges represent the crystal (electrical) field perturbing the metal?s d orbitals containing nonbonding electrons.

Biodegradability

The ability of a substance to be broken down into simpler substances by bacteria.

 

Nodal Plane

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

 

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.

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

xylic acid

Any of six colorless, crystalline, isomeric acids having the formula C9H10O2, derived from xylene.

Dimer

Molecule formed by combination of two smaller (identical) molecules.

xylene

Any of three oily, colorless, water-insoluble, flammable, toxic, isomeric liquids, C8H10, of the benzene series, obtained mostly from coal tar: used chiefly in the manufacture of dyes.