Science Final Crossword

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Across
  1. 2. A negative ion
  2. 4. horizontal rows on the Periodic Table
  3. 8. A type of bond between a metal and a nonmetal
  4. 9. A type of bond between two nonmetals
  5. 11. mass divided by volume
  6. 16. releases energy
  7. 18. using heat to seperate a mixture
  8. 19. a type of change where the bonds are not broken or formed and are reversible
  9. 20. measured with a graduated cylinder
Down
  1. 1. measured with a triple beam balance
  2. 3. a bond where electrons are shared equally
  3. 5. A postive ion
  4. 6. using a filter to separate solids from liquids
  5. 7. absorbs energy
  6. 10. the rule saying atoms want 8 electrons in the valence shell
  7. 12. a type of change where bonds are broken and formed and are not reversible
  8. 13. a bond where electrons are shared unequally
  9. 14. Same # of protons, different # of neutrons
  10. 15. vertical columns on the Periodic Table
  11. 17. the amount of molecules in 6HCl