According to the law of conservation of matter (or mass), you can not create or destroy matter (or mass). You only transform it.
The law is most relevant to chemical processing where matter changes form dramatically, but if you do a careful accounting of all elements going into a chemical process, the quantity and mass of every element coming out totals up to the same as went in. This is, of course, important in engineering applications as well.
To get technical though, the simple version of the law is not correct in exotic circumstances. Elements do change when there is radioactivity and in such circumstances the mass changes slightly as well. When one is extremely precise in stating this conservation law, one must include the special theory of relativity and Einstein's famous equation, energy equal mass time the square of the speed of light. So, technically, mass and energy combined are conserved.
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
The mass of reactants must be equal to the mass of products.
Antoine Lavoisier
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.
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According to the law of conservation of mass, mass cannot be created or destroyed in a chemical reaction. Similarly, according to the law of conservation of matter, matter cannot be created or destroyed in a closed system. These laws demonstrate that mass and matter remain constant throughout physical or chemical changes.
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.
According to the law of conservation of matter, the total mass of substances before a chemical reaction is equal to the total mass after the reaction. This means that the number of atoms is not changed during a chemical reaction, only their arrangement.
No, fusion does not violate the law of conservation of matter. In fusion reactions, the total mass of the reactants is equal to the total mass of the products, as mass is converted into energy according to Einstein's famous equation, Emc2.
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.