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Antoine Lavoisier

Antoine Lavoisier

Chemist

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Quick Facts

Father of Modern Chemistry
Law of Conservation of Mass
Oxygen

Life Journey

1743Born in Paris, France

Antoine-Laurent de Lavoisier was born into a wealthy Parisian family. His father was a lawyer, and his mother died when he was five, leaving him a substantial inheritance that would later fund his scientific research.

1754Begins education at College Mazarin

Lavoisier enrolled at the prestigious College Mazarin, where he received an excellent education in the humanities, languages, and sciences. He showed exceptional aptitude for mathematics and natural philosophy.

1761Studies law and science

While studying law to follow his father's profession, Lavoisier attended lectures in chemistry, botany, astronomy, and geology. His passion for science grew under the mentorship of prominent French scientists.

1764First scientific paper on gypsum

Lavoisier presented his first scientific paper to the Academy of Sciences on the composition of gypsum. This geological study demonstrated his meticulous experimental approach that would characterize his later work.

1766Wins Academy prize for street lighting

Lavoisier won a gold medal from the Academy of Sciences for his essay on the best method of lighting large cities. This practical application of science brought him recognition and funding.

1768Elected to French Academy of Sciences

At just 25, Lavoisier was elected to the prestigious French Academy of Sciences, the youngest member at the time. His election recognized his promising contributions to geology and chemistry.

1769Becomes a tax farmer

Lavoisier purchased a share in the Ferme Generale, the tax collection company. While controversial, this position provided the substantial income needed to fund his expensive scientific equipment and experiments.

1771Marries Marie-Anne Paulze

Lavoisier married 13-year-old Marie-Anne Pierrette Paulze, daughter of a fellow tax farmer. She became his invaluable scientific collaborator, translating works, illustrating his publications, and assisting in experiments.

1772Begins combustion experiments

Lavoisier began his revolutionary experiments on combustion, carefully measuring weight changes during burning. These experiments would eventually disprove the phlogiston theory and establish modern chemistry.

1778Names oxygen and explains combustion

Lavoisier named the gas 'oxygen' (acid-maker) and correctly explained combustion as a reaction with this gas. This overturned the phlogiston theory that had dominated chemistry for a century.

1783Establishes law of conservation of mass

Lavoisier demonstrated that matter is neither created nor destroyed in chemical reactions. This fundamental principle became a cornerstone of modern chemistry and physics.

1785Appointed to Gunpowder Commission

Lavoisier became director of the French Gunpowder Commission, improving the quality and production of gunpowder. He moved into the Arsenal, which became his main laboratory.

1789Publishes Elementary Treatise on Chemistry

Lavoisier published his masterwork 'Traite elementaire de chimie', which established modern chemical nomenclature and listed 33 elements. It is considered the first modern chemistry textbook.

1791Researches human respiration

Lavoisier conducted pioneering experiments on respiration with Armand Seguin, demonstrating that respiration is a form of slow combustion that consumes oxygen and produces carbon dioxide and heat.

1793Arrested during the Terror

During the Reign of Terror, Lavoisier was arrested along with other former tax farmers. Despite his scientific contributions, the Revolutionary Tribunal was unsympathetic to the wealthy elite.

1794Executed by guillotine

Antoine Lavoisier was guillotined on May 8, 1794. The mathematician Lagrange lamented: 'It took them only an instant to cut off his head, but France may not produce another such head in a century.'

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