The concept has existed since ancient times - even if the exact statement we now think of as "The Law of Conservation of Matter" is of more recent formulation.
An important idea in ancient Greek philosophy was that "Nothing comes from nothing", so that what exists now has always existed, since no new matter can come into existence where there was none before. An explicit statement of this, along with the further principle that nothing can pass away into nothing, is found in Empedocles (ca. 490-430 BCE): "For it is impossible for anything to come to be from what is not, and it cannot be brought about or heard of that what is should be utterly destroyed".
A closer version was stated by Nasīr al-Dīn al-Tūsī (1201-1274) during the 13th century. He wrote that "A body of matter cannot disappear completely. It only changes its form, condition, composition, color and other properties and turns into a different complex or elementary matter"
The principle of conservation of mass as we now think of it was first outlined clearly by Antoine Lavoisier (1743-1794). It has been claimed that Mikhail Lomonosov (1711-1765) had expressed similar ideas during 1748-and proven them by experiments-but this has been challenged. Others who anticipated the work of Lavoisier include Joseph Black (1728-1799), Henry Cavendish (1731-1810), and Jean Rey (1583-1645).
The law of conservation of matter is applied to processes not to a compound.
The law of conservation of matter states that in a chemical reaction, matter is neither created nor destroyed.
The law of conservation of matter
Antoine Lavoisier
The law that states mass cannot be created or destroyed in chemical or physical changes is the Law of Conservation of Mass, also known as the Principle of Mass Conservation. This law implies that in a closed system, the total mass remains constant before and after any chemical or physical process, even if the substances undergo a change in form or state.
If by the law of conservation you mean the Law of Conservation of Matter, then it states that matter cant be created or destroyed.
If by the law of conservation you mean the Law of Conservation of Matter, then it states that matter cant be created or destroyed.
The law of conservation of matter is applied to processes not to a compound.
The law of conservation of matter is also known as the law of conservation of mass. It states that mass is neither created nor destroyed in a chemical reaction, only rearranged.
Answer the question...
The law of conservation of matter states that in a chemical reaction, matter is neither created nor destroyed.
The law of conservation of matter
You are confusing the law of conservation of matter/mass with the law of conservation of energy. The law of conservation of matter/mass states that in a closed system matter is neither created nor destroyed. During a chemical reaction matter is rearranged, it doesn't change forms (energy can change forms). The atoms in the products are the same atoms that were in the reactants.
condensation
The law of conservation of matter states that matter is neither created nor destroyed. An example of this is a simple combustion reaction of methane. CH4 + 2O2 --> CO2 + 2H2O. There is 1 carbon, four oxygen's and four hydrogens on each side, thus showing conservation of matter.
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.
This is the Law of Conservation of Matter.