Question

Assertion: In a chemical reaction, the sum of the masses of the reactants and products remains unchanged.
Reason: According to the law of conservation of mass, matter can neither be created nor destroyed.
A.Both the assertion and reason are correct and reason is the correct explanation for assertion.
B.Both the assertion and reason are correct and reason is not the correct explanation for assertion.
C.Assertion is incorrect but reason is incorrect.
D.Both Assertion and reason are incorrect.

Answer 1

We know that according to the law of conservation of mass, the mass of the merchandise throughout a reaction should equal the mass of the reactants. The law states that mass will neither be created nor destroyed, even if it should be rearranged in space, or the entities related to it may be modified in form.

Complete step by step answer:
As we know that on the basis of the law of conservation of mass, matter will neither be created nor destroyed; so the general quantity of matter, i.e., the whole mass, ahead of and once a change stays an equivalent. So, the mass of the substances, taken together, before and after a chemical change, conjointly can remain the same. From this, it is usually finished that any new substance shaped during a chemical process is due to the rearrangement of the atoms of the primary substance. The quantity of atoms of each kind remains associate equivalent, before and once the chemical process.

Therefore, the correct option is A. .

Additional information:
We must remember that the ultimate supply of energy in our gift universe is that the huge Bang. All the energy was created at the start of your time and because the universe grew many stages of material developed, made from that energy. By the time of the trendy Universe, the energy was distributed either into mass, or K.E. or energy in lumps of matter, or beaming energy. The plenty are classified into galaxies and stars at intervals. The sun is one in all those stars and got the energy from the primeval big Bang.

Note: As we know that the law of conservation of mass is beneficial for a variety of calculations and may be wont to solve for unknown masses, such as the quantity of gas consumed or produced during a reaction.
The law of conservation was later amended by Einstein within the law of conservation of mass-energy, which describes the very fact that the entire mass and energy during a system remain stable.