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Describes processes that absorb heat energy.

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Total Ionic Equation

Equation for a chemical reaction written to show the predominant form of all species in aqueous solution or in contact with water.

Leclanche Cell

A common type of dry cell.

Halogens

Group VIIA elements: F, Cl, Br, I

London Forces

Very weak and very short-range attractive forces between short-lived temporary (induced) dipoles, also called dispersion Forces.

Reducing Agent

The substance that reduces another substance and is oxidized.

Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Actinides

Elements 89 to 103 (between lawrencium and actinium) on the periodic table. Only the first four have been found in nature in appreciable amounts. The remainder have been produced synthetically.

Electronic Geometry

The geometric arrangement of orbitals containing the shared and unshared electron pairs surrounding the central atom of a molecule or polyatomic ion.

Diamonds Are Forever

Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?

Ioniztion

The breaking up of a compound into separate ions.