The first modern enunciation is from Mikhail Lomonosov in 1848.
By experimenting with a triple beam balance
The law is that no mass can be created or destroyed, but it can change form.
He created the first experiments that proved the Law of Conservation of Mass. These ideas were more clearly formulated in 1789 by Antoine Lavoisier.
Antoine Lavoisier
The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. ... If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
By experimenting with a triple beam balance
The law of conservation of mass states that in an isolated system, energy is neither created nor destroyed. It was first described by Antoine Lavoisier in 1789 and was later amended by Einstein in the Law of Conservation of Mass-Energy.
The law is that no mass can be created or destroyed, but it can change form.
Antoine Lavoisier: Developed the Law of Conservation of Mass. We don't really know who discovered it. Hope that answered it...:)
albert Einstein
i think it was made in 1925 but not sure :)
He created the first experiments that proved the Law of Conservation of Mass. These ideas were more clearly formulated in 1789 by Antoine Lavoisier.
Antoine Lavoisier
A citation from Wikipedia:"The law of conservation of mass, also known as principle of mass/matter conservation is that the mass of a closed system (in the sense of a completely isolated system) will remain constant over time."For more details see the link bellow.
The law of conservation of mass, or the principle of mass conservation was discovered by Antoine Lavoisier. It states that for any system closed to all transfers of matter an energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.
The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. ... If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
The law of conservation of mass, which states that in a closed system, mass is neither created nor destroyed, it can only change form. This means that in a chemical reaction that takes place in a closed system, the mass of the reactants equals the mass of the products.