Periodic Table

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Across
  1. 2. We need this element to survive.
  2. 3. I have 2 electrons in the first shell, 8 in the second shell, and 6 in the third shell.
  3. 6. My element symbol is As.
  4. 8. This element makes engagement rings.
  5. 9. I am used to inflate balloons.
  6. 10. The rows going left to right are called _______.
  7. 13. This element is good for your bones
  8. 16. I can be used to tell you how many electrons an element has.
  9. 17. The group on the far right is called _________.
  10. 18. I am a metal with 28 electrons.
  11. 19. This elements symbol is Si.
  12. 20. The columns up and down are called _______.
Down
  1. 1. These subatomic particles have a positive charge.
  2. 4. My atomic number is 9.
  3. 5. I have an atomic mass of 26.98
  4. 7. These subatomic particles have a negative charge.
  5. 11. I have 26 protons.
  6. 12. I am mineral that is found in bananas.
  7. 14. I have an atomic mass of 39.95 and am a noble gas.
  8. 15. I have 47 protons.