Does water freeze when it is at zero degrees Celsius?

Answer 1

Pure water freezes at zero degrees Celsius (Centigrade) and 32 degrees Fahrenheit.
(That was part of the definition of these temperature scales.)

At its freezing temperature, it can co-exist in both liquid and solid form.

Answer 2

The answer really is sometimes. Zero degrees Celsius is the freezing point for water, but the fact is that water can remain a stable liquid at zero degrees C. Zero degrees C is also the melting point of ice, but you can have ice that remains stable at zero degrees C as well. The difference is the 'heat of fusion'. Water that is a stable liquid at zero degrees C will freeze into ice at zero degrees C if the heat of fusion is removed from the water. The heat of fusion is really just heat; if the water is in a freezer that is being maintained at lower than zero degrees C, the water will give up the heat of fusion and become ice at zero degrees, and then the ice will continue to cool to the temperature that is being maintained in the freezer. The reverse happens when ice is warmed. The ice reaches zero degrees, and then as more heat is added the ice becomes water and zero degrees, and then warms to ambient temperature. By manipulating both temperature and pressure it is possible to have a controlled environment where there is water vapor, ice and liquid water simultaneously, all in stable states.

Answer 3

Sure, if the pressure on it is low enough.

A very interesting pressure is 0.006 atm or about 0.088 pound per square inch.

At that pressure, if you have a pot of water at 0.01° C, then it's boiling and freezing

at the same time, and you have ice, water, and steam all happily swapping states and

changing to each other, all at the same time.

Answer 4

No, Water freezes at 0 Celsius.

Water boils at 100 Celsius.

Answer 5

Yes:) but it take some time before it freezes.

Answer 6

Yes.

0 Celsius is the freezing point so, yes.

Answer 7

Yes, it is true for pure water.