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Details Title: Famous Men-dudes Description: Some famous dead guys who discovered Atoms and stuff. Total Flash Cards: 11 Created: 09/29/2004 07:19:22	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Name: JJ Thomson Date of Discovery: 1987 Definition Discovery: Electrons Experiment: Involved passing electric current through gases at low pressure Term Name: E. Rutherford Date of Discovery: 1911 Definition Discovery: Nucleus Experiment: Directed a narrow beam of alpha particles at a very thin sheet of gold file Term Name: E. Goldstein Date of Discovery: 1886 Definition Discovery: Protons Experiment: observed a cathode-ray tube and found rays traveling in the direction opposite to that of the cathode rays Term Name: J. Dalton Date of Discovery: Definition Discovery: Atomic Theory Experiment: Studied the ratios in which elements combine in chemical reactions Four Theories: 1. Atoms are composed of indivisible atoms. 2.Atoms of the same element are identical. 3. Atoms of different elements can mix together in a simple whole # ratios 4. Chemical reactions occur when atoms seperate or combine Term Name: Democritus Date of Discovery: fourth century B.C. Definition Discovery: Atoms Term Name: N. Bohr Date of Discovery: 1940 Definition Discovery: modern concept of the atomic model Term Name: J. Chadwick Date of Discovery: 1932 Definition Discovery: Neutrons Term Name: R. Millikan Date of Discovery: Definition Discovery: The quantity of charge carried by an electron and the ratio of the charge to the mass of an electron Ecperiment: Term Name: E. Schroedinger Date of Discovery: 1933 Definition Discovery: new productive forms of atomic theory Term Name: D. Mendeleev Date of Discovery: mid-1800s Definition Discovery: Period Table of Elements Term Name: H. Moseley Date of Discovery: 1913 Definition Discovery: Atomic number of the atoms of the elements