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A reaction in which two atoms or groups of atoms are added to a molecule, one on each side of a double or triple bond. Types of addition reaction include electrophilic, nucleophilic (polar) and free radical addition (non-polar).

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Particulate Matter

Fine divided solid particles suspended in polluted air.

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.

Saccharic

of or derived from saccharin or a saccharine substance.

 

Halogens

Group VIIA elements: F, Cl, Br, I

Saccharate

A compound formed by interaction of sucrose with a metallic oxide, usually lime, and useful in the purification of sugar.

 

Safranine

Also called "phenosafranine". A purplish-red, water-soluble dye, C18H14N4, used for textiles and as a stain in microscopy.

Periodic Law

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

Mother Nuclide

Nuclide that undergoes nuclear decay.

Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

Equation of State

An equation that describes the behavior of matter in a given state, the van der Waals equation describes the behavior of the gaseous state.