Element Crossword Puzzle

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Across
  1. 2. I am one of the strongest metals. I have 110 neutrons.
  2. 9. I am a gas and I weigh 39.95 amu.
  3. 11. My mass # is 55.
  4. 12. I clean your pools. I have 18 neutrons.
  5. 15. I have an atomic mass of 195.08 amu.
  6. 16. I weigh 190.23 amu.
  7. 18. I have 24 protons.
  8. 20. I have 92 electrons.
  9. 21. I have 48 neutrons.
  10. 22. I am number 95 on the periodic table.
  11. 23. I am the first element on the periodic table.
  12. 25. I have 29 electrons.
Down
  1. 1. I am poisonous. I am the symbol Pb.
  2. 3. I have 28 protons.
  3. 4. I make up all organic mass in the world. I have 5 protons.
  4. 5. My atomic # is 50.
  5. 6. I have 56 electrons.
  6. 7. I have an atomic number of 31.
  7. 8. My symbol is Se.
  8. 10. I am the ONLY metal that exists as a liquid at room temperature. My atomic number Is 80.
  9. 13. I have 20 protons. I make your bones strong.
  10. 14. I am very reactive to water. I have a mass # of 23.
  11. 17. My atomic mass is 107.87 amu.
  12. 19. I am the second element. I make your balloons fly.
  13. 24. You need me to survive. I have a mass of 16.00 amu.