CHEM 1110 Chapter Notes - Chapter 2: Oil Drop Experiment, Bromine, Unified Atomic Mass Unit
9 Feb 2016
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Chem 1110: principles of chemistry 1 chapter 2 reading notes. Democritus described the world to be made out of atomos. Aristotle and plato said that there are no indivisible particles. Law of conservation of mass derived from this: 4) compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms. Law of constant composition: these postulates created 3 classical laws, 1) law of conservation of mass. The total mass of materials present after a chemical reaction is the same as the total mass present before the reaction: 2) law of constant composition. In a given compound, the relative numbers and kinds of atoms are constant: 3) law of multiple proportions. If 2 elements combine to form more than one compound, the masses are ratios of small whole #"s. Robert millikan found the charge of an electron by using the oil drop experiment.
