Across
- 3. Center part of an atom
- 4. Have more energy than solids
- 5. When solid turns to liquid
- 6. Electron ___ diagram
- 8. When liquid turns to solid
- 11. Has a density of 1g/cm^3
- 13. First element on the periodic table
- 14. These gasses do not react
Down
- 1. used to identify unknown substances
- 2. Ex. Dry Ice to Carbon Dioxide
- 7. Found in the nucleus and positively charged
- 9. Alkaline _____ Metals
- 10. Have highest energy
- 12. Electrons on the outermost energy shell
- 13. Most reactive gasses