Atoms_Molecules_and_Ions - The lecture “Atoms. Molecules,...

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The lecture “Atoms. Molecules, and Ions” begins by exploring the history of the discovery of theatomic world. Greeks were the first to attempt a theory as to why chemical changes occur.There are three important chemical laws: Law of conservation (Lavoisier), Law of definiteproportion (Proust), and Law of multiple proportion (Dalton). This leads us into the topic ofDalton’s Atomic Theory. There are numerous principles when it comes to this theory. Forexample, each element that exists is made up of tiny particles called atoms. In addition,chemical compounds are made when the atoms of the elements are combined. Also, chemicalreactions involve the reorganization of the atoms. There are other important scientists whocame up with discoveries as well such as Gay-Lusac and Avogadro. Gay-Lusac measured thevolumes of gases that reacted with each other, and Avogadro found that at the same time,Tand P equal volumes of different gases contain the same number of particles. J.J. Thompsonpostulated the experience of electrons by using this device called the cathode ray tubes. Ernest
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Term
Fall
Professor
laio
Tags
Chemistry, Atom, Alkali Metals

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