SCIENCE 101

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Across
  1. 2. can be turned into wire
  2. 5. the sharing of electron pairs between atoms
  3. 8. periodic table is made of many of them
  4. 9. kind of like a chemical reaction, but releases energy
  5. 11. property of a solid, liquid, or gas
  6. 12. attraction between two charged ions
  7. 15. existing/ taking place within a molecule
  8. 16. a molecule that can gain or lose electrons
  9. 17. formula used for chemical reaction
  10. 19. theory of atomic structure
  11. 20. can be hammered or pressed into thin layers
  12. 21. substance observed to see change
  13. 22. positive charged ion
Down
  1. 1. the dot diagram
  2. 3. negative charged , used on the outside shell from the nucleus
  3. 4. Compound substance made of more than one kind of element
  4. 6. visual appearance happens with this reaction
  5. 7. vertical family from periodic table
  6. 10. existing/taking place of molecules
  7. 13. negative charged ion
  8. 14. an action performed
  9. 18. substance formed by energy