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The release of heat by a system as a process occurs.

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    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...

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    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...

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Peroxide

A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

Binary Acid

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

Heteronuclear

Consisting of different elements.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Deposition

The direct solidification of a vapor by cooling, the reverse of sublimation.

Saccharic acid

A white, needlelike, crystalline, water-soluble solid or syrup, C6H10O8, usually made by the oxidation of cane sugar, glucose, or starch by nitric acid. Also called "Glucaric acid."

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.

Mole Fraction

The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

Fast Neutron

A neutron ejected at high kinetic energy in a nuclear reaction.

Allotropes

Different forms of the same element in the same physical state.

Ionization

In aqueous solution, the process in which a molecular compound reacts with water and forms ions.

Combination Reaction

Reaction in which two substances (elements or compounds) combine to form one compound.

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Safranine

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

Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Debye

The unit used to express dipole moments.

Neutralization

The reaction of an acid with a base to form a salt and water. Usually, the reaction of hydrogen ions with hydrogen ions to form water molecules.

xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Condensed States

The solid and liquid states.