Question

The law of conservation of mass was proposed by ________ in _____.

• A. Antoine L. Lavoisier
• B. 1774

Answer 1

Law of conservation of mass:

1. In 1774, a chemist named Antoine L. Lavoisier made quantitative measurements in a chemical reaction and observed that mass can neither be created nor destroyed in a chemical change.
2. It remains conserved throughout the reaction.

Hence, the law of conservation of mass was proposed by Antoine L. Lavoisier in 1774.