chemistry G

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Across
  1. 4. the number of protons in an element
  2. 6. atoms of an element with different numbers of neutrons
  3. 7. protons & neutrons are in this
  4. 8. mass/volume
  5. 10. Liquid phase-->gas phase
  6. 11. have +1 charge
  7. 13. Type of radiation very high in energy
  8. 16. Plum pudding model
  9. 17. decay results in reduction of atomic number by 2
  10. 21. have no charge
  11. 24. Gas phase --> liquid phase
  12. 25. have a -1 charge
  13. 27. Most elements are this
  14. 28. has 92 protons
  15. 29. Gas phase-->Solid phase
  16. 30. a packet of energy that can interact with atoms/electons
Down
  1. 1. experiment conducted by Rutherford
  2. 2. a charged atom
  3. 3. Uncertainty principle
  4. 5. Liquid phase --> solid phase
  5. 9. Solid phase-->gas phase
  6. 12. electrons can be thought of as particles or waves
  7. 14. type of radiation very low in energy
  8. 15. the 4 electron orbitals in order
  9. 18. refers to electrons & energy levels
  10. 19. can act as metal or nonmetal
  11. 20. smallest unit of an element
  12. 22. decay result in increase of atomic number by 1
  13. 23. has 2 protons
  14. 26. first scientific model