Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Volume of particles

  1. Jun 18, 2010 #1
    When ice changes to water , its volume decreases but when solid carbon dioxide changes to liquid carbon dioxide ,its volume increases . Why is it so ? Both changes from solid state to liquid state but one with its volume increasing and the other one decreasing.
  2. jcsd
  3. Jun 18, 2010 #2
  4. Jun 18, 2010 #3
    Yeah, it's actually pretty cool because if water didn't behave in the way it did then we wouldn't have ice on top of cold lakes. But because liquid water is more dense than solid water we see ice float at the top, sweet!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook