Mr. Hedrick's Atom anatomy

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Across
  1. 4. J.J Thomson used the cathode ray tube to discover this particle
  2. 6. the building block of matter
  3. 8. when two or more elements come together to form a _______
  4. 13. particle with a negative charge
  5. 14. formulated the uncertainty principle (Werner ______)
  6. 15. chemistry is the study of _________
  7. 17. Greek philosopher who proposed the idea of a atom
  8. 19. scientific ______ explains why things happen
  9. 20. Greek word for atom
  10. 21. ____ is a statement that describes a consistent, observable pattern or regularity in nature under specific conditions
Down
  1. 1. what kind of table holds all the elements
  2. 2. Ernest Rutherford discovered this particle
  3. 3. Neutrally charged particle in the nucleus
  4. 5. something made up of only one type of atom
  5. 7. a simplified representation of a complex phenomenon, system, or process
  6. 9. positively charged particle in the nucleus
  7. 10. Erwin Schrodinger presented this idea instead of fixed paths
  8. 11. Proposed the plum pudding model of the atom (J.J _______)
  9. 12. was discovered by James Chadwick in 1932
  10. 16. did the gold foil experiment(Ernest ______)
  11. 18. A ____ reaction is when a set of substances undergo a chemical change and form a different substance