Which statement best describes the law of conservation of mass?
A. Reactants in a chemical reaction rearrange to form a new substance or substances.
B. Reactants and products cannot escape from a closed system.
C. Chemical symbols are used to show atom balance before and after a reaction.
D. Matter cannot be created or destroyed in a chemical reaction.
1 answer
D. Matter cannot be created or destroyed in a chemical reaction.
9 answers