Periodic Table

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Across
  1. 2. All halogens are found in nature except __________
  2. 4. Each element in a period has the same number of atomic _______
  3. 5. The only semimetal in family 13
  4. 8. Family 17 is made up of __________
  5. 12. __________ metals are only naturally found in salts and never as free elements
  6. 13. Elements that have the same atomic number of valence electrons and therefore similar properties
  7. 14. There are how many Nobel gases
  8. 15. _________ gases can be found in family 18
  9. 16. Alkaline metals react with halogens to form compounds called _________
  10. 20. All the elements in family ________ can be found naturally on earth
  11. 21. All elements in a period have the same number of ____________ shells
  12. 22. The noble gas family can also be called _______ gases
Down
  1. 1. what are the horizontal rows called on the periodic table
  2. 2. _________ metals can be found in family two
  3. 3. Family 1 is all alkali metals except ____________
  4. 6. All of the metals in group one are highly __________
  5. 7. The only liquid Transitional metal
  6. 9. How many periods are there
  7. 10. Transitional metals have high _________ points
  8. 11. Families 3-12 are all _____________ metals
  9. 16. This element can be placed in two families
  10. 17. Alkaline metals are soft and ____________
  11. 18. Alkali metals are also known as the __________ family
  12. 19. how many families are in the periodic table