Question

are the numbers of atoms before and after a chemical reaction the same?why?

Answer 1

Answer:

In a chemical reaction the total mass of all the substances taking part in the reaction remains the same. Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction.

Explanation:

it is helpful to you...

Answer 2

Answer:

YES the number of atoms are same before and after a chemical reaction

Explanation:

as u know, the Dalton hd stated some of its postulates

So, the 2nd postulate of Dalton's atomic theory says that " ATOMS ARE INDIVISIBLE PARTICLES, THEY CANNOT BE CREATED OR DESTROYED IN A CHEMICAL REACTION "

in simple words Energy can never be created nor being destroyed....

So that's the answer, hope u understand

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