Notices
Results 1 to 8 of 8

Thread: Is hot ice possible?

  1. #1 Is hot ice possible? 
    New Member
    Join Date
    Feb 2010
    Posts
    3
    hey guys, im the first time joining this kind of forum.
    hmm.. and here is a problem to me.
    im trying to do this experiment but i tried it for lots of time.
    but i just cant figure it out why it doesnt works.
    anyone can answer me?
    or this is not possible?

    here is a link for the steps to make the hot ice.
    http://video.about.com/chemistry/How...ke-Hot-Ice.htm

    Thanks


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Ph.D.
    Join Date
    Jan 2009
    Posts
    951
    if you mean ice a a temperature above 0 C ,yes , under extreme pressure.
    look up the phase diagram of water.


    Reply With Quote  
     

  4. #3  
    New Member
    Join Date
    Feb 2010
    Posts
    3
    not really in an extreme temperature.
    juz normal temperature.
    i tried lots of times.
    but it juz not working.
    and im wondering what's wrong.
    hahahah~~
    Reply With Quote  
     

  5. #4  
    Forum Freshman
    Join Date
    Feb 2010
    Posts
    17
    There are a few things that can look very like ice and be hot, there are also many things you can add to water to make it stay as ice at higher temperatures. Under normal circumstances with pure water this shouldn't be possible.

    Having looked at the video there seems to be nothing fundamentally wrong with the idea, thought I don't know if it actually works (well) using those chemicals.
    Reply With Quote  
     

  6. #5  
    gc
    gc is offline
    Forum Junior
    Join Date
    Sep 2009
    Posts
    210
    Quote Originally Posted by fizzlooney
    if you mean ice a a temperature above 0 C ,yes , under extreme pressure.
    look up the phase diagram of water.
    High pressure would favour the liquid form of H2O.
    Reply With Quote  
     

  7. #6  
    New Member
    Join Date
    Feb 2010
    Posts
    3
    Quote Originally Posted by Gargar
    There are a few things that can look very like ice and be hot, there are also many things you can add to water to make it stay as ice at higher temperatures. Under normal circumstances with pure water this shouldn't be possible.

    Having looked at the video there seems to be nothing fundamentally wrong with the idea, thought I don't know if it actually works (well) using those chemicals.
    hmmm..
    can i know what kind of things that added to water and make it stay as ice at higher temperatures?
    Reply With Quote  
     

  8. #7  
    New Member
    Join Date
    Jan 2010
    Location
    Washington, D.C.
    Posts
    2
    Having looked at the video you provided, I can tell you that the "hot ice" made in the demonstration is not actually ice (solid water). The woman mixes sodium bicarbonate and acetic acid which react (acid-base reaction) to form sodium acetate, water, and carbon dioxide.

    She then boils off most of the water to create a supersaturated solution of sodium acetate. Pouring the solution agitates the system causing crystals of sodium acetate to form. Although the crystals look like ice, they are really nothing more than solid crystals of sodium acetate.
    Reply With Quote  
     

  9. #8  
    Forum Sophomore
    Join Date
    Sep 2009
    Location
    Goomalling, Western Australia
    Posts
    178
    Quote Originally Posted by gc
    Quote Originally Posted by fizzlooney
    if you mean ice a a temperature above 0 C ,yes , under extreme pressure.
    look up the phase diagram of water.
    High pressure would favour the liquid form of H2O.
    sorry - fizzlooney is more correct in this instance ...

    the water phase diagram is well known, and widely available on the net -
    eg:
    http://www1.lsbu.ac.uk/water/phase.html

    it shows not only the various forms of high- and ultra-high -pressure ices,
    but also the triple points, and the supercritical fluid phase of water ...
    Nature abhors perfection; cats abhor a vacuum.

    "I don't know; I'm making it up as I go ..." Dr H Jones (Jr).
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •