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The attractive forces that hold atoms together in elements or compounds.

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  • Features of the Scanning Tunneling Microscope

    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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    The most famous type of garnet stone is pyrope (flaming). This is the "oldest of garnets", with a dense red color, similar to the grain of an edible garnet. Pyrope has a variety called rhodolite - a stone of dense pink or pink-purple color, which sometimes has the alexandrite effect and is used in...



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Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.

Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Isomorphous

Refers to crystals having the same atomic arrangement.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Chemical Change

A change in which one or more new substances are formed.

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Faraday

One faraday of electricity corresponds to the charge on 6.022 x 1023 electrons, or 96,487.301 coulombs.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.