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Reaction of a substance with water.

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Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Resonance

The concept in which two or more equivalent dot formulas for the same arrangement of atoms (resonance structures) are necessary to describe the bonding in a molecule or ion.

Enthalpy

The heat content of a specific amount of substance, defined as E= PV.

Electromagnetic Radiation

Energy that is propagated by means of electric and magnetic fields that oscillate in directions perpendicular to the direction of travel of the energy.

What are Compound Microscopes?

Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses.

The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is the stage, with the illuminator below that.

Saccharate

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