During his career, Lavoisier brought major changes to the study of chemistry.
Much of his research was done on combustion.
He is the person who explained combustion by oxidation.
To prove this, Lavoisier studied the air.
In order to do this, in 1776, he burned mercury in an enclosed vase.
His conclusion: the air is a combination of oxygen and is not a chemical element.

He also discovered the law of conservation of mass that is nothing is lost, nothing is created, everything is transformed.
It says that the mass of the final products of a chemical reaction is the same as the reactants’ ones.
Today, this principle is the basis of modern chemistry.

Lavoisier, together with L. B. Guyton de Morveau, Claude-Louis Berthollet and Antoine François de Fourcroy, created the first system of chemical nomenclature in the 1780s.
During his career, Lavoisier brought major changes to the study of chemistry. Much of his research was done on combustion. He is the person who explained combustion by oxidation. To prove this, Lavoisier studied the air. In order to do this, in 1776, he burned mercury in an enclosed vase. His conclusion: the air is a combination of oxygen and is not a chemical element.
He also discovered the law of conservation of mass that is nothing is lost, nothing is created, everything is transformed. It says that the mass of the final products of a chemical reaction is the same as the reactants’ ones. Today, this principle is the basis of modern chemistry.
Lavoisier, together with L. B. Guyton de Morveau, Claude-Louis Berthollet and Antoine François de Fourcroy, created the first system of chemical nomenclature in the 1780s.
Antoine Lavoisier