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CHEMICAL REACTIONS - School Essays

CHEMICAL REACTIONS

are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter.
Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to speak of chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during combustion. He said that a burning candle would go out if a candlesnuffer was put over it because the air inside the snuffer became saturated with phlogiston. According to Stahl, wood is made up of phlogiston and ash, because only ...

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combustion was a chemical reaction involving oxygen and another combustible substance, such as wood.
John Dalton, in the early Nineteenth Century, discovered the atom. It gave way to the idea that a chemical reaction was actually the rearrangement of groups of atoms called molecules. Dalton also said that the appearance and disappearance of properties meant that the atomic composition gave the appearance of different properties. He also came up with idea that a molecule of one substance is exactly the same as any other molecule of the same substance.
People like Joseph-Lois Gay-Lussac added to Dalton's concepts with the postulate that the volumes of gasses that react with each other are related (14 grams of nitrogen reacted with exactly three grams of hydrogen, eight grams of oxygen reacted to exactly one gram of hydrogen, etc.)
Amedeo Avogadro also added to the concept of . He said that all gasses at the same pressure; volume and temperature contain the same number of ...

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CHEMICAL REACTIONS. (2007, August 13). Retrieved December 23, 2024, from http://www.essayworld.com/essays/CHEMICAL-REACTIONS/69492

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PAPER DETAILS

Added: 8/13/2007 01:57:09 AM
Category: Science & Nature
Type: Premium Paper
Words: 874
Pages: 4

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