Lavoisier measured the mass of substances before and after chemical reactions and summarized his observations in a(n)
A)hypothesis.
B)observation.
C)theory.
D)law.

Question

Quizplus · Accepted Answer

Lavoisier observed the law of conservation of mass, which states that the mass of a closed system (in this case, the reactants and products of a chemical reaction) remains constant over time. He summarized this observation in what is now known as Lavoisier's Law or the Law of Conservation of Mass. Therefore, the best choice is D, law.

Lavoisier Measured the Mass of Substances Before and After Chemical