Antane Lavoisier
Antane Lavoisier created the ‘Law of Conservation of Matter’. He measured the mass of substances before and after the
chemical reactions and found the masses were equal. No mass gained or lost during the reaction. Law of Constant composition 1799, French chemist, Joseph Louis Proust found that the given compound always contains some elements in same proportions by mass.
chemical reactions and found the masses were equal. No mass gained or lost during the reaction. Law of Constant composition 1799, French chemist, Joseph Louis Proust found that the given compound always contains some elements in same proportions by mass.