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