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pzona
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I imagine everyone here is familiar with the classic demonstration of making water boil at room temperature using a vacuum pump. Since lowering pressure changes the state from liquid to gas, can raising the temperature cause it to freeze? I know some about the difference in amounts of pressure it takes to undergo the change from liquid to gas and from liquid to solid, but is this even theoretically possible? Obviously it's not going to happen in a high school lab, but I was just wondering if there is a pressure at which water will freeze at room temperature.