Which statement is a correct expression of the Law of Conservation of Mass?

A.
The total mass is unpredictable in a chemical reaction.

B.
The total mass remains the same during a chemical reaction.

C.
The total mass decreases during a chemical reaction.

D.
The total mass increases in a chemical reaction.

Question

Which statement is a correct expression of the Law of Conservation of Mass?
 
 A.
The total mass is unpredictable in a chemical reaction.
 
 B.
The total mass remains the same during a chemical reaction.
 
 C.
The total mass decreases during a chemical reaction.
 
 D.
The total mass increases in a chemical reaction.

anonymous · Answer

Law of Conservation of Mass = mass is conserved so it should remain the same before and after the reaction

anonymous · Answer

It is B. This can be proven because of the fact that matter cannot be created nor destroyed, and all of the elements in your reactant must be in the product as well.