SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The fact that matter is not created or destroyed in any chemical or physical change is called the ____
A
Law of Thermodynamics
B
Newton’s Law
C
Law of Conservation of Mass
D
Law of Superposition
Explanation: 

Detailed explanation-1: -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-2: -Conservation of Mass-Energy The difference in mass is so slight for ordinary chemical reactions that the law of conservation of mass is still considered to hold true. In nuclear reactions, however, the conversion of mass into energy is significant enough to invalidate the law.

Detailed explanation-3: -1) Law of Conservation of Mass French chemist, Antoine Lavoisier in 1789, studied this law. This law states that “In all physical and chemical changes, the total mass of the reactants is equal to that of the products” or “Mass can neither be created nor destroyed.”

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