CHEM 1110 Lecture Notes - Lecture 3: Subatomic Particle, Robert Andrews Millikan, Cathode Ray Tube

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Round off the answer to the first column that has an uncertain digit. Round off the answer to the same number of sig figs as the smallest number of sig figs in any measured quantity. At a given temperature, the density of a certain chemical substance is always the same, regardless of the sample size. Each element is made up of tiny, individual particles called atoms. Atoms of any one element are identical in every aspect. All atoms of one element are different from atoms of any other elements. Atoms of one element combine with atoms of other elements to from chemical compounds. Proposed electricity was composed of single particles of electricity. Calculated mass to charge ratio of cathode rays. Plum pudding model of the atom (a hypothesis). Particle whose size is smaller than that of an atom. Subatomic particle carrying a negative charge and have a mass of 9. 1x10^-31kg. Proton o o o o o o o.