Atomic Models Crossword Puzzle #2

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Across
  1. 4. created the modern periodic table by correcting the atomic masses of beryllium (Be), indium (In), and uranium (U)
  2. 6. polonium and learning that radiation came from atoms
  3. 7. created the original periodic table in 1875
  4. 10. proposed a theory in 1913 that said energy is transferred only in certain well defined quantities and created a model
  5. 12. said that everything is made of water
  6. 14. performed an experiment in 1897 and discovered the electron, which is a subatomic particle
  7. 15. experimented and found that atoms of inorganic substances are held together by weight
  8. 16. drop experiment in 1913
  9. 17. is known for discovering the elements radium
Down
  1. 1. used ratios to rediscover atoms
  2. 2. discovered the charge of an election with the
  3. 3. used x rays to discover the atomic numbers of each element
  4. 5. created the atomic theory
  5. 6. believed, along with Plato that the earth was made up of four elements: air, water, earth, and fire
  6. 8. came up with a groundbreaking wave equation for electron movements
  7. 9. discovered the neutron
  8. 11. discovered that there are there are two types of radiation: alpha and beta particles and discovered that atoms are mostly empty space
  9. 13. co-discovered plutonium and over 100 isotypes