Chemistry Midterm review 2

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Across
  1. 2. a group on the periodic table that includes chlorine, fluorine, and bromine
  2. 4. a type of bond that forms between group 1 and group 17 elements
  3. 7. found on the periodic table as the atomic number
  4. 8. the degree to which an element tends to gain electrons and form negative ions in chemical reactions
  5. 10. a type of bond that would form between group 16 and group 17 elements
Down
  1. 1. the vertical columns on a periodic table
  2. 3. ions that have gained electrons, forming negative charges
  3. 5. ions that have lost electrons, forming positive charges
  4. 6. number written in front of a compound on a chemical reaction
  5. 9. negatively charged subatomic particle