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Observe the orientation of graphite-coated paper disks in two-phase solvent systems containing water and an organic solvent. Will the graphite side of the paper disk emerge face-up or face-down in the solvent mixture? Use this demonstration to illustrate the difference between polar and nonpolar substances and their affinity for one another.


  • Covalent Bonding
  • Polar vs. Nonpolar
  • Density
  • Mass
  • Volume