Does Ice evaporate?

  1. Greetings, I was curious to know if ice evaporates. I suspect it does to a very slight degree but to what degree I am not sure. It likely depends on a plethora of factors, from ice temperature, outside temperature, humidity, sunlight, wind, etc. So if you have any leads for me I'd appreciate it, thanks.
  2. jcsd
  3. turbo

    turbo 7,063
    Gold Member

    Google "sublimation"
  4. NO, 0 degrees Celcius is the freezing point of water and the melting point of Ice. Snow and Ice must be above 0 degrees celcius to melt to water and then the water will start to evaporate.
  5. matthyaouw

    matthyaouw 1,149
    Gold Member

    By definition, evapouration is the conversion of a liquid to vapour so technically no, but yes sublimation does occur.
  6. at a certain pressure and a certain temperature, ice will nearly instantly change from the solid state to the gas state. I recommend looking at water's phase graph and see where on the graph it would happen. I believe the y axis is pressure and x axis is temperature. The graph should be divided into 3 regions, liquid, gas and solid. Look for the border between solid and gas and that is the region where sublimation occurs
  7. Look up a "phase diagram" for water. See the point where the three lines meet? The region on the top left is where water's a solid (cold, high pressure). Top right is liquid (warmer, normal pressure). Bottom right is gas (warm, low pressure).

    If you're at such a low pressure and cold temperature that you start off below the point where the lines meet (and you're still a solid), and you keep your pressure constant as you heat it'll make the water go into sublimation without becoming a liquid.
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