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5 Written Questions

5 Matching Questions

  1. trace element
  2. matter
  3. element
  4. chemical bond
  5. atomic weight
  1. a holds atoms together, strongest are covalent and ionic bonds
  2. b anything that has mass and takes up space
  3. c mass of an atom
  4. d those required by an organism in only minute quantities
  5. e substance that cannot be broken down to other substances by chemical reactions

5 Multiple Choice Questions

  1. different states of potential energy for electrons in an atom
  2. outermost electron shell
  3. hydrogen atom covalently bonded to one electronegative atom is also attraced to another electronegative atom
  4. attraction of an atom for the electrons
  5. two or more atoms held together by covalent bonds

5 True/False Questions

  1. ionnegatively charged ion


  2. van der Waals interactionouter electrons


  3. valence electronouter electrons


  4. anionnegatively charged ion


  5. polar covalent bondtwo atoms are equally electronegative


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