Tuesday, January 28, 2014

Chemical Reactions

Chemical reactions are the heart of chemistry. People have forever cognise that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They purpose that it was achievable that individual particles made up matter. Later, in the ordinal Century, a German chemist named Georg Ernst Stahl was the first to drive on chemic reaction, specifically, combustion. He verbalize that a substance called phlogiston take flight into the demarcation from all substances during combustion. He explained that a burning cd would go out if a candle snuffer was project oer it because the air inside the snuffer became saturated with phlogiston. match to his judgments, woodland is made up of phlogiston and ash, because only ash is left wing later combustion. His ideas soon came upon some contradiction. When metal is burned, its ash has a great deal than the original substance. Stahl tried to cover himself by reflexion that phlogiston will take away from a substances mass or that it had a negative mass, which contradicted his original theories. In the eighteenth Century Antoine-Laurent Lavoisier, in France, discovered an important detail in the understanding of the chemical substance reaction combustion, oxigine (oxygen). He verbalise that combustion was a chemical reaction involving oxygen and some otherwise combustible substance, such as wood. John Dalton, in the former(a) 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 mien and slicing of properties meant that the atomic composition dictated the appearance of different properties. He also came up with idea that a molecule of iodine substance is exactly the same as any other molecule of the same substance. People like Joseph-Lois Gay-Lussac added to Daltons concepts with the postulate that the volumes... If you involve to get a full essay, or! der it on our website: OrderCustomPaper.com

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