State the law of conservation of mass with an example
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The law of conservation of mass was created in 1789 by a French chemist, Antoine Lavoisier. The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant. A reactant is when two or more elements chemically interact to make a new substance and a product is the substance that is formed as the result of a chemical reaction. Mass and matter may not be able to be created or destroyed, but it can change forms to other substances like liquids, gasses, solids, etc.Law of conservation of mass states that during any physical or chemical charge, the total mass of the product is equal to the total mass of reactant.
Example :- When landelt took the solutions of NaCl and AgNO
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separately in Landolt's tube, they are sealed and weighed after weighing two solutions mixes thoroughly as a result a reaction.
AgNO
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+NaCl⟶AgCl+NaNO
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Again the weight is measured and it remain practically same.