Lavoisier has been considered by many scholars to be the "father of chemistry." Forty years later, German physicist Johann Wolfang Dbereiner observed similarities in physical and chemical properties of certain elements. What Was Lavoisier'S Greatest Contribution To Science His pivotal book Elements of Chemistry (1789) contained a Table of simple substances, which listed 33 substances, many he proposed were elements. Antoine Lavoisier was a key figure in the field of chemistry in the late 18th century. Since the Paris law faculty made few demands on its students, Lavoisier was able to spend much of his three years as a law student attending public and private lectures on chemistry and physics and working under the tutelage of leading naturalists. His categories included gases, non-metals, metals, and earths. He realized as the diamond decreased in mass, the jar was still the same weight indicating the diamond had been turned into a gas. This website helped me pass! Proponents of the theory even suggested that phlogiston might have a negative weight. He demonstrated that these elements maintained a constant mass throughout any reactions they may undergo through the process of libration, or measuring the mass on a balance, as well as using huge convex lenses, sealed containers, and precise balances, which he used in his diamond incineration experiments. Henry Moseley | Periodic Table, Atomic Theory & Discovery. A Brief History of Atomic Theory - ThoughtCo He established the law of conservation of mass, determined that combustion and respiration are caused by chemical reactions with what he named "oxygen," and helped systematize chemical nomenclature, among many other accomplishments. This was a remarkable discovery as everyone had considered water to be an element from the time of Aristotle who included it in his four elements; over 2,000 years ago.
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