Chemical bonds

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Across
  1. 1. how many valance electrons an atom needs to be full
  2. 3. When chemical bonds are broken or new chemical bonds are made
  3. 6. an electron in the outermost orbital of an atom
  4. 8. a reaction that gives off heat
  5. 9. type of chemical bond where valence electrons are shared
  6. 10. example of a substance with atoms that are bonded
Down
  1. 2. type of chemical bond where valence electrons are transfered
  2. 4. H20 is the _______________ for water
  3. 5. positively charged atom in an ionic chemical bond
  4. 7. negatively charged atom in an ionic chemical bond