Chemistry

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Across
  1. 2. Occurs between two nonmetals
  2. 3. Likes to bond to chemicals
  3. 6. A group of atoms bonded together
  4. 8. Likes to chase mice
  5. 9. electrons in the outermost shells
Down
  1. 1. Occurs between a metal and a nonmetal
  2. 4. Change of materials into another
  3. 5. electron transfer proceeds until an atom has acquired an octet of electrons
  4. 7. the basic unit of a chemical element