Periodic Table

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Across
  1. 2. elements that form positively charged ions
  2. 6. the name given to Group 0 elements is ___ gases.
  3. 7. non-metallic elements are usually found on the ___ hand side of the periodic table
  4. 9. Group I metals react with water to form metal _ and hydrogen gas
  5. 12. down Group VII, elements will become darker in _____.
  6. 13. the element with the lowest melting point in Group I
  7. 14. down Group I, ___ of elements will increase
Down
  1. 1. the most reactive element in Group VII
  2. 3. tells you the number of electron shells in each atom
  3. 4. this gas is used to fill light bulbs to provide an inert environment
  4. 5. the reason why Group 0 elements are unreactive is because they have __ filled valence electron shell
  5. 8. tells you the number of valence electrons in each atom
  6. 10. A _ molecule is made up of two atoms chemically joined together
  7. 11. a name to describe elements in Group VII