At what temperature does water freeze?In: Physics, Temperature
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32oF or 0oC or 273.15 K or 32oF or 0oC or 273.15 K
Pressure has an effect on the freezing point (or melting point) of water, though it isn't as substantial as the effect of pressure on boiling point. We could say that these values are at standard pressure, but realistically there is no noticeable difference of water's freezing point on various altitudes on earth.It should be noted that if there are ions dissolved in the water, the freezing point will drop significantly due to the added solute.
Heat of Fusion
Note that water does not actually freeze when it reaches 0° C, because it requires the removal of the "heat of fusion" (enthalpy) to change phase. Water will cool slightly below 0° and remain at that temperature until it has fully crystalized into ice.
First answer by ID1286941838. Last edit by Blue. Contributor trust: 1337 [recommend contributor]. Question popularity: 42 [recommend question].



