Question

What is the law of conservation of mass?

A. The total mass of materials present after a chemical reaction is the same as the total mass present before the reaction.
B. In a given compound, the relative numbers and kinds of atoms are constant
C. If two elements A and B combine to form more than one compound, the masses of B that can combine with a given mass of A are in the ratio of small whole numbers.
D. Each element is composed of extremely small particles called atoms.

Answer 1

A. The total mass of materials present after a chemical reaction is the same as the total mass present before the reaction.

Step-by-step explanation:

Law of conservation states that whatever mass you start with you will end with, mass cannot be gained or lost