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Date Submitted: 07/25/2012 01:08 AM
The Four Laws of Chemical Combination
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There are four laws of chemical combination that are essential for the study of chemistry from elementary level. They are the law of conservation of mass, the law of definite proportions, the law of multiple proportions and the law of reciprocal proportions. Here is a simplified explanation of each of the four laws.
Joseph Louis Proust (1754-1826) popular for the law of definite proportion, otherwise called the Proust Law.
Source: Wikimedia Commons
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The law of conservation of mass
The law of conservation of mass or matter states that matter is neither created nor destroyed during chemical reaction but changes from one form to another .
This law is a derivation of a part of the Dalton's atomic theory which stated that, atoms can neither be created nor be destroyed but change from one form to another.
The law has become the foundation of all chemical reactions and is supported by several laboratory experiments that includes the combustion of coal or wood. Although we may be swift to conclude that the burning of wood actually destroys matter as we are left with ash and charcoal that cannot be used to reconstruct the wood, weighing the masses of the reactants: wood and reacted oxygen; and the products: carbon(IV) oxide, water vapour, ash, soot and other components; will reveal that mass was actually conserved.
The law of definite proportions
The law...