Question

Which of these bests illustrates the law of conservation of mass?

The number of each type of atom in a balanced chemical equation is the same on both sides.
The mass of the products in a chemical reaction is greater than that of the reactants.
The mass of the reactants in a chemical reaction is greater than that of the products.
The number of each type of molecule in a balanced chemical equation is the same on both sides.

Answer 1

The number of each type of molecule in a balanced equation is the same on both sides

Step-by-step explanation:

the mass should never be greater on either side of the equation if it is balanced; the coefficients in front of elements and molecules and such can change depending on the kind of reaction that occurred, so out of these four choices the last one serves as the best answer.