SCIENCE CROSSWORD PUZZLE

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