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A subatomic particle having a mass of 0.00054858 amu and a charge of 1-.

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Buffer Solution

Solution that resists change in pH, contains either a weak acid and a soluble ionic salt of the acid or a weak base and a soluble ionic salt of the base.

Ionic Compounds

Compounds containing predominantly ionic bonding.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Hydrophilic Colloids

Colloidal particles that repel water molecules.

Molecular Orbital

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

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Fluids

Substances that flow freely, gases and liquids.

Osmosis

The process by which solvent molecules pass through a semipermable membrane from a dilute solution into a more concentrated solution.

 

Bonding Pair

Pair of electrons involved in a covalent bond.

Dubnium

Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.