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

Georg Ernst Stahl was the first to postulate on chemical

reaction, specifically, combustion. He said that a substance

called phlogiston escaped into the air from all substances during

combustion. He explained that a burning candle would go out if a

candle snuffer was put over it because the air inside the snuffer

became saturated with phlogiston. According to his ideas, wood

is made up of phlogiston and ash, because only ash is left after

combustion. His ideas soon came upon some contradiction. 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 contradicted his original theories.

In the Eighteenth Century Antoine-Laurent Lavoisier, in

France, discovered an important detail in the understanding of

the chemical reaction combustion, oxigine (oxygen). He s

this. The burning of wood, or any other fuel, gives off heat,

photosynthesis. Carbon-dioxide and water combine with chlorophyll

paper is an overveiw of that extensive subject. It gives a good

named Paul McEuen of the University of California at Berkly

substance to the reaction. It Is part of the energy

They are trying to control them with lasers. Scientists are

called a hydrogenization reaction. If Oleic acid is

Scientists today are still toying with chemical reactions.

together. A substation reaction is a reaction in which a

He was the first to urge scientists to study living systems for

in which n is a large number of moles. A chain reaction is a

Some common words found in the essay are:
Amedeo Avogadro, Kinetics Kinetics, California Berkly, Ernst Stahl, Robert Merrifeild, University Illinois, Nineteenth Century, Joseph-Lois Gay-Lussac, chemical reactions, Lavoisier France, Ancient Greeks, chemical reaction, reaction reaction, reaction rate, reaction reactants, reaction called, acids bases, reaction oxidation goes, reaction combustion, speed reaction, understanding chemical, acids bases react, chemical reactions chemistry,
Approximate Word count = 2203
Approximate Pages = 9 (250 words per page double spaced)