| Across |
| 4. | Letters that are used for numbers on the periodic table (2 Words) |
| 5. | Elements in groups 3-12 (2 Words) |
| 7. | Measure of the size of an atom (2 Words) |
| 8. | Elements that like to give away electrons |
| 9. | An ion with a positive charge |
| 12. | Electrons that participate in the bonding process (2 Words) |
| 13. | The energy required to remove an electron (2 Words) |
| 15. | Tendency to attract electrons |
| 17. | Property of being easily manipulated into another shape |
| 18. | An atom's energy levels are broken down into |
| 19. | Property of easily being hammered flat without breaking |