Topic: History of Chemistry. Plan

, The Skeptic — a chemist or commentary on experiments on four elements and three chemical bases from mixed bodies . It can be said that from this period chemistry began to develop as a science. At the end of the 17th century, the German chemist G. Stahl developed the phlogiston theory. Although this theory was also a mistake, it was very important for its time. Because the scientists of that time completely got rid of alchemy based on this theory. In the early 18th century, the Russian scientist MV Lomonosov proved that the phlogiston theory was wrong, proving that no matter how much a metal is heated in a closed vessel, its mass does not change.
Based on Lomonosov's experiment, the French scientist A. Lavoisier proved that when a metal is heated, it reacts with oxygen in the air. Lavoisier developed the correct scientific theory of combustion and oxidation processes. In 1808, the English scientist Dalton, based on his experiments, developed an atomistic theory and determined the proportions of chemical elements in a compound. paved the way for its development. In recent years, Uzbekistan has been working hard to develop the chemical science and chemical industry. One of the academicians in the development of chemistry in Uzbekistan S.Yu. The services of Yunusov, OS Sodiqov, MN Nabiyev, HUsmanov, KSAhmedov and others are great.