law of conservation of mass, lavoisier

Law of conservation of mass was introduced by Antoine Lavoisier

The matter can neither be created , nor distroyed. But one form of the matter can be convert to another form


The law of conservation of mass, or principle of mass conservation, states that for any system closed to all transfers of matter andenergy(both of which have mass),themassof the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form, asfor example when light orphysicalworkis transformed into particles that contribute the same mass to the system as the light or work had contributed. The law implies (requires) that during anychemical reaction,nuclear reaction, orradioactive decayin an isolated system, the total massof the reactants or starting materials must be equal to the mass of the products.