2007年6月22日星期五

Halogen of the Week

Flourine, is the chemical element with the symbol F and atomic number 9. Atomic fluorine is univalent and is the most chemically reactive and electronegative of all the elements. In its elementally isolated (pure) form, fluorine is a poisonous, pale, yellow-green gas, with chemical formula F2. Like other halogens, molecular fluorine is highly dangerous; it causes severe chemical burns on contact with skin.

Investigate Electrochemistry

A fuel cell is an electrochemical device that produces electricity from a combined chemical reaction and electrical charge transport that occurs within the fuel cell. The hydrogen fuel cell is like a big battery which produces electricity from hydrogen, which is the fuel; an electrochemical reaction takes place between the hydrogen and oxygen that directly converts chemical energy into electrical energy.

Alchemy

Alchemy is not science in the strictest terms of science. Yet it is trying to make sense of the material world like chemistry. In addition there are mystic, magical and art

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