CHEMICAL REACTIONS
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 ash is left after combustion. His ideas soon brought speculations of doubt. When metal is burned, its ash has a greater mass than the original substance. Stahl tried to cover himself by saying that phlogiston will take away from a substance's mass or that it had a negative mass, which weren't relevant to his original theories. In the Eighteenth Century Antoine-Laurent Lavoisier, in France, discovered an important detail in the understanding of the chemical reaction combustion of oxygen. He said that combus
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Some common words found in the essay are:
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Approximate Word count = 880
Approximate Pages = 4 (250 words per page double spaced)
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