Law of conservation of mass is proposed by John Dalton. In his theory of the atom that atoms can neither be created nor destroyed, but change from one form to another. Hence matter too which is made up of atoms can be neither created nor destroyed.
Lavoisier formulated the law on the basis of experimental evidence. He heated tin with air in a closed vessel and found that the total mass of tin and air before the chemical change remained unaltered even after the chemical change producing tin oxide provided the temperature remained constant. Hence before and after the experiment the mass remained the same.
|Binomial Experiment Calculator||Mass Calculator|
|Mass to Energy||Atomic Mass Calculator|