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5 Written questions

5 Matching questions

  1. Moseley
  2. Chadwick
  3. Goldstein
  4. Soddy
  5. Berzelius
  1. a replaced diagrams with letters for elements
  2. b discovered isotope
  3. c observed rays in cathode ray tube traveling opposite direction, rays had positive charge known as proton
  4. d discovered the neutron, no charge, same mass as proton
  5. e determined relationship of protons to atomic emission spectra, determined properties of each element, gave element atomic number based on protons

5 Multiple choice questions

  1. contributed to concept of energy levels to atomic theory, electrons move in circular orbits around nucleus, electrons jump to different energy levels
  2. electrons enter lowest energy level first
  3. discovered radioactivity
  4. proposed light is energy that behaves as particles, photoelectric effect
  5. discovered the electron, Plum pudding model

5 True/False questions

  1. Marie Curiemax number of electrons in each orbital is 2 with opposite spins


  2. Planckproposed light energy is emitted as particles carrying definite quantities of energy in small amounts


  3. Millikanoil drop experiment led to determine the charge of an electron


  4. Lavoisierdesigned balance, performed quantitative experiments, Law of Conservation of Mass


  5. Paulimax number of electrons in each orbital is 2 with opposite spins