Science Project

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Across
  1. 2. Cu
  2. 5. element that has the atomic mass 207.2
  3. 6. element with the atomic number 50
  4. 8. in the 8th group and the 4th period
  5. 9. in the 15th group and 6th period
  6. 11. Elements on the right side of the "stairsteps"
  7. 15. element that has the atomic mass 19
  8. 18. has the atomic number 36
  9. 19. under the symbol in the element
Down
  1. 1. element with the atomic number 79
  2. 3. horizontal rows of the periodic table
  3. 4. in the 1st group and 2nd period
  4. 7. element with atomic mass 92.91
  5. 10. Symbol for Manganese
  6. 11. element with the atomic number 10
  7. 12. The top # in the element
  8. 13. What is the symbol for silicon?
  9. 14. vertical columns of the periodic table
  10. 16. has the atomic mass 14.01
  11. 17. element that makes balloons float