The Sky ants crossword puzzle

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Across
  1. 2. covalent bonds share electrons but they are actually______for them
  2. 4. The change of the metals on the left of the periodic table
  3. 5. shares electrons to satisfy the octet rule
  4. 8. has at least 2 atoms combined to make a____or compound
Down
  1. 1. when a marshmallow gets toasted or burned it is going through_____change
  2. 3. when atoms are attracted by opposite charges
  3. 5. H20 is a molecule and_____
  4. 6. contain three basic particles electrons, protons, and neutrons
  5. 7. the charge of the nonmetals on the right of the periodic table