Question

How do you prove the law of conservation of mass?

Answer 1

Hint: First of all we should know about the mass and after that we should know about the law of conservation of mass for solving this question. Mass is the measure of the amount of the matter or the object. The SI unit of mass is kilogram, but the smaller masses are generally measured in gram.

Complete step-by-step answer:
About the Law of conservation of mass-
Every chemical change is a chemical reaction. Law of conservation of mass states that- The mass of an object can neither be created nor be destroyed. During the physical change, substance can change its form without any change in mass. While, in a chemical reaction, the reactants are converted into product, but the total mass of the reactants is always equal to the total mass of the product.

There are some examples which prove the law of conservation of mass
i) Combustion process: The example of conservation of mass is the burning of wood which generally involves Oxygen, Carbon dioxide, water vapor and ashes.
ii) Chemical reactions - For example, when oxygen and hydrogen combine together they form water, and in this process the molecular weight of the hydrogen and oxygen before the reaction is equal to the molecular weight of water after the chemical reactions proceed.

Note: As we know from the law of conservation of mass that in a chemical reaction the mass of the reactants is equal to the mass of products for a low energy is a thermodynamics process. Hence, this suggests that law of conservation of mass is related to thermodynamics.