Antoine Lavoisier

Lore & Background

Lavoisier was born to a wealthy noble family in Paris. He studied at the Collège des Quatre-Nations, where his scientific interests were aroused, and later earned a law degree but never practiced. His first chemical publication appeared in 1764, and in 1766 he was awarded a gold medal by the King for an essay on urban street lighting. He worked on a geological survey of Alsace–Lorraine and the first geological map of France.

At age 26, Lavoisier bought a share in the Ferme générale, a tax farming company, which funded his scientific research. In 1771, he married Marie-Anne Paulze, who became his laboratory assistant and a renowned chemist in her own right; she translated English documents, assisted in the laboratory, and hosted scientific gatherings. Lavoisier also helped construct the metric system and wrote the first extensive list of elements, predicting the existence of silicon.

During the French Revolution, Lavoisier was charged with tax fraud and selling adulterated tobacco due to his role in the Ferme générale. He was guillotined on 8 May 1794 despite appeals to spare his life. A year and a half later, he was exonerated by the French government.

Reader's Guide

Lavoisier's significance lies in his transformation of chemistry into a quantitative science. By using precise measurements, he confirmed the law of conservation of mass, which led to balanced chemical equations still used today. He identified oxygen and hydrogen as elements, disproving the phlogiston theory of combustion. His work on the metric system and chemical nomenclature provided a standardized framework for science. Despite his scientific achievements, his involvement with the unpopular Ferme générale led to his execution during the Reign of Terror. His legacy endures as a foundational figure in modern chemistry, and his wife Marie-Anne Paulze Lavoisier also became a noted chemist. The article notes that his accomplishments stem largely from shifting chemistry from qualitative to quantitative methods.

Did You Know?

• Lavoisier named oxygen as an element in 1778 and recognized hydrogen as an element in 1783.
• He helped construct the metric system and wrote the first extensive list of elements, predicting silicon.
• His wife and laboratory assistant, Marie-Anne Paulze Lavoisier, became a renowned chemist in her own right.
• He was guillotined during the French Revolution for tax fraud and selling adulterated tobacco, but was exonerated a year and a half later.