Chemistry review

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Across
  1. 5. element with 7 valence electrons
  2. 6. when two or more elements form or break a bond
  3. 8. two or more atoms ionically bonded
  4. 11. tiny negatively charged
  5. 15. smallest unit of matter
  6. 17. force holding nucleus together
  7. 18. atom that has gained or lost an electron
  8. 20. force that pushes electrons apart from eachother
  9. 22. atoms closely packed together, unmoving
  10. 23. elements on the right side of the table
  11. 24. holds two atoms together
  12. 25. atoms spaced far apart
  13. 26. atoms packed close but sliding by
  14. 27. the basic measurement in chemistry
Down
  1. 1. two or more atoms covalently bonded
  2. 2. type of bond where atoms share electrons
  3. 3. type of bond where one atom takes an electron
  4. 4. many atoms forming a charged compound
  5. 7. outermost electrons
  6. 9. elements on the left side of the table
  7. 10. 118 different varieties
  8. 12. uncharged in the nucleus
  9. 13. positive in the nucleus
  10. 14. amount of space a substance occupies
  11. 16. measured with a thermometer
  12. 19. first column of elements
  13. 21. other force holding nucleus together