What does it mean for mass to be conserved?
A) Mass is neither created nor destroyed in the course of a chemical reaction.
B) Mass is a valuable resource and should not be wasted.
C) Molecules do not degrade under normal circumstances.
D) Atoms sometimes disappear over the course of a chemical reaction.
E) Atoms sometimes appear, disappear, or are changed over the course of a chemical reaction.

Question

Quizplus · Accepted Answer

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. This means the total mass of reactants equals the total mass of products.

What Does It Mean for Mass to Be Conserved