What was Antoine-Laurent Lavoisier's most important contribution to chemistry in 1789?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Law of Conservation of Mass.
Antoine-Laurent Lavoisier's most important contribution to chemistry in 1789 was the publication of his book "Traité Élémentaire de Chimie" (Elementary Treatise of Chemistry). In this work, he is credited with establishing the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Lavoisier also helped to define and name oxygen and hydrogen, and he laid the foundation for the modern system of chemical nomenclature, revolutionizing the field of chemistry.