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Antoine Lavoisier publishes Traité Élémentaire de Chimie, the first modern chemistry textbook. It is a complete survey of (at that time) modern chemistry, including the first concise definition of the law of conservation of mass, and thus also represents the founding of the discipline of stoichiometry or quantitative chemical analysis. [42 ...
Antoine-Laurent de Lavoisier (/ l ə ˈ v w ɑː z i eɪ / lə-VWAH-zee-ay; [1] [2] [3] French: [ɑ̃twan lɔʁɑ̃ də lavwazje]; 26 August 1743 – 8 May 1794), [4] also Antoine Lavoisier after the French Revolution, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology.
Lavoisier and Berthollet, Chimistes Celebres, Liebig's Extract of Meat Company Trading Card, 1929 Claude Louis Berthollet statue in Annecy, France Claude Louis Berthollet ( French pronunciation: [klod lwi bɛʁtɔlɛ] , 9 December 1748 – 6 November 1822) was a Savoyard -French chemist who became vice president of the French Senate in 1804. [ 1 ]
A 100,000-year-old ochre-processing workshop was found at Blombos Cave in South Africa. It indicates that early humans had an elementary knowledge of mineral processing. Paintings drawn by early humans consisting of early humans mixing animal blood with other liquids found on cave walls also indicate a small knowledge of chemistry. [3] [4]
Lavoisier subsequently discovered and named oxygen, described its role in animal respiration [89] and the calcination of metals exposed to air (1774–1778). In 1783, Lavoisier found that water was a compound of oxygen and hydrogen. [90] Lavoisier's years of experimentation formed a body of work that contested phlogiston theory.
Tanks : developed at the same time (1915–1916) in France and in Great Britain. France was the second country to use tanks on the battlefield (after Great Britain). in 1916, the first practical light tank, the Renault FT with the first full 360° rotation turret became, for armour historian Steven Zaloga "the world's first modern tank". [218]
Chemistry, not moral failing, accounts for the brain’s unwinding. In the laboratories that study drug addiction, researchers have found that the brain becomes conditioned by the repeated dopamine rush caused by heroin. “The brain is not designed to handle it,” said Dr. Ruben Baler, a scientist with the National Institute on Drug Abuse.
Lavoisier clearly ties his ideas in with those of Condillac, seeking to reform the field of chemistry. His goal in Traité was to associate the field with direct experience and observation, rather than assumption. His work defined a new foundation for the basis of chemical ideas and set a direction for the future course of chemistry. [18]