PT Webquest Crossword Puzzle

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Across
  1. 5. The group number for Alkaline Earth Metals (3 letters).
  2. 6. Halogen means (10 letters)
  3. 9. Halogens are located in group _ (9 letters)
  4. 10. Noble gases are also called __ gases (5 letters)
  5. 13. These metals are very reactive (6 letters).
  6. 14. This element located with alkali metals is not a metal(8 letters).
  7. 15. Total number of periods on the PT (5 letters)
  8. 18. His is basis of the modern periodic table (9 letters).
  9. 20. Group 18 elements (10 letters).
Down
  1. 1. Hydrogen does not have a __ (7 letters)
  2. 2. The state of matter for most nonmetals at room temperature (3 letters).
  3. 3. He said that atoms of a given element are identical to each other (6 letters).
  4. 4. Ancient Greek theory of atoms is attributed to this man (10 letters).
  5. 7. The maximum number of electrons possible in the outer shell (5 letters).
  6. 8. Exists as a liquid at room temp (7 letters)
  7. 11. Groups 3-12 are called the ____ metals (10 letters)
  8. 12. Metalloids have properties of both __ and nonmetals (6 letters)
  9. 16. The electrons in the outer orbital are called __ electrons (7 letters).
  10. 17. Total number of groups on the PT (8 letters)
  11. 19. Elements in the same period have the same _ (8 letters).