Final review

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Across
  1. 4. gained an electron
  2. 6. horizontal on periodic table
  3. 7. a bond with transferred electrons
  4. 10. a sharing bond
  5. 12. 2 atoms become 1
  6. 16. a little bit
  7. 17. vertical on periodic table
  8. 18. Easily reacts with another chemical
  9. 19. To give something away
  10. 23. 1 atom becomes 2
  11. 24. Between
  12. 26. put together
  13. 27. minus sign
  14. 28. To have less
Down
  1. 1. side to side
  2. 2. take apart
  3. 3. A molecule with a plus and minus side
  4. 5. up and down
  5. 8. The time taken for half of sample to decay
  6. 9. electricity flows
  7. 11. A molecule without plus and minus sides
  8. 13. Intermolecular force
  9. 14. To get more
  10. 15. Break down
  11. 20. using it together
  12. 21. lost an electron
  13. 22. plus sign
  14. 25. Size of an atom