Melting and Boiling points do depend on surrounding pressure. So, almost zero pressure might influence the melting phenomenon.
2007-10-28 19:47:38 · 13 answers · asked by dilip 1 in Science & Mathematics ➔ Physics
Complete vacuum is not possible. Even if it is assumed possible, it can prevent heat transfer by conduction and convection, but not by radiation. So ice will certainly melt eventually.
2007-10-28 19:53:47 · answer #1 · answered by Madhukar 7 · 0⤊ 0⤋
You did not mention about the room temperature. If it is zero, if no heat energy is coming there by radiation, possibility of melting is very rare. Boiling point depends upon the surrounding pressure ( see principle of pressure coocker), Meltimg point too, but not very much.
2007-10-29 03:47:13 · answer #2 · answered by Joymash 6 · 0⤊ 0⤋
yes
the water in the ice will want to evaporate cause of the lack of presure of the air
if you dont believe me that airpressure can cause that
try filling a glass all the way to the top
untill its ready to flow over (no more air in the glass)
then take a carton so it covers up the opening in the glass
and turn it upside down
the carton shoot keep the water on its place
thats the air pressure pushing against the carton from 1 side only :)
2007-10-29 02:52:32 · answer #3 · answered by bertyhell 3 · 0⤊ 0⤋
The Vapour Pressure of ice is less than 4mm Hg so if the vacuum is better than 4mm Hg it will sublimate.
RoyS
2007-10-29 03:30:22 · answer #4 · answered by Roy S 5 · 0⤊ 0⤋
Looking at a phase diagram for water,
http://www.lsbu.ac.uk/water/phase.html
it becomes clear that the preferred phase for water at zero pressure and 293 K is gaseous.
Thus, if you put solid water into such an environment, it will transition from solid to gas phase via sublimation.
2007-10-29 02:55:23 · answer #5 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
I would have to say that it would melt even at 0 vaccum its not the vaccum, it would be the temp in and around the vaccum that would slow or stopp the melting.
2007-10-29 02:53:06 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Yes. Apart from putting it in the fridge and doing cold stuff to it, it would always melt no matter what you do.
2007-10-29 02:52:36 · answer #7 · answered by straight lines 2 · 0⤊ 0⤋
if it's in a pure vacuum it would sublimate because ther'es no air pressure to keep the molecules in a liquid state. and then noone would be able to drink it.
2007-10-29 02:51:46 · answer #8 · answered by niobiumboy 2 · 0⤊ 0⤋
No, it will change from solid directly to vapor like dry ice does. This is known as subliming.
2007-10-29 02:52:01 · answer #9 · answered by Anonymous · 0⤊ 0⤋
think about it lie this... remember those bags of coffee that are vacuum sealed? what if you vaccuum sealed a piece of ice in one of those and put it on the shelf.. of course it would be water when you opened it.....
2007-10-29 02:51:54 · answer #10 · answered by djbred18 3 · 0⤊ 0⤋