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Homework Help: Why densities of pure and salt water are different

  1. Sep 7, 2008 #1
    Density = mass/volume (D=m/v), explain the difference in density of pure & salt water in words and using a mathematically based example
  2. jcsd
  3. Sep 7, 2008 #2


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    Homework Helper
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    Gold Member

    The ions of the salt fill space within the liquid. Not sure about any equations to help with this.
  4. Sep 8, 2008 #3
    density of pure water and impure water are different... as you said, density = mass/volume.

    what do you think will happen to the mass and volume when salt is added to the water?!
  5. Sep 8, 2008 #4
    Last edited: Sep 8, 2008
  6. Sep 8, 2008 #5


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    Staff: Mentor

    Not exactly, ions are ordering water molecules, changing how densely they are packed.
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