EVERYDAY SCIENCE

Detailed explanation-1: -The law of conservation of mass states that matter can neither be created nor be destroyed in a chemical reaction, i.e. mass before and after the chemical reaction is same.

Detailed explanation-2: -Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change-none is created or destroyed. This concept is called the Law of Conservation of Mass.

Detailed explanation-3: -matter is neither created nor destroyed a chemical reaction More simply the mass of products is equal to the mass of the reaction in a chemical reaction.

Detailed explanation-4: -A given compound always contains exactly the same proportion of elements by weight can be explained by the Law of Constant Proportion. Hence this is an incorrect statement about the Law of Conservation of Mass.

Detailed explanation-5: -According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and kind of atoms after the chemical change as were present before the chemical change.