Across
- 2. Atomic Mass Unit
- 4. Loss of the nucleus causing radiation to release
- 5. They are very reactive, form compounds, and kill microorganisms
- 10. Occurs when there is a charge in number of electrons
- 11. Has negative charge
- 12. Group 1 elements
- 14. Great conductors, reactive, solid at room temperature
- 17. determines how many protons there are
- 18. Elements 89-103
- 19. ion Has less protons than electrons
- 23. Center of an atom
- 24. Has different amounts of electrons
- 25. Where the Protons, neutrons, nucleus, and electrons
Down
- 1. Very chemically reactive
- 3. can be controlled and are semi conductors
- 6. Vertical lines on a periodic table AKA columns
- 7. Don't react to other compounds
- 8. Poor conductors and are gasses at room temperature
- 9. Group2 elements
- 13. Horizontal lines on the periodic table AKA rows
- 15. Elements 57-71
- 16. Very useful because they are less reactive
- 20. The same element but has different neutrons
- 21. Has no charge
- 22. Has a positive charge