If water freezes as 0 degrees C than a what degrees C does ice melt?

Answer 1

Ice melts at 0 degrees C. It all depends on wether the molecules are gaining or loosing kinetic energy. If you reach zero degrees celcius and more heat energy is taken away then crystalization occurs and water freezes. If a solid reaches zero degrees celcius and more heat energy is added, then the solid will melt.

Answer 2

For all materials, freezing point and melting point occur at the same temperature. If you were to graph temperature on the vertical axis and heat added (or removed as the case may be) on the horizontal axis, then temperature would increase (or decrease) with added (or removed) heat except at freezing and boiling points. At these points, the graph would actually be horizontal. Try it: graph a line that increases (like a straight line) from left to right, then horizontal, then increases again, then horizontal, then increases again. The first horizontal segement is where freezing or melting occurs. The length of this segement and the corresponding temperature is different for different materials, but it will always be horizontal. During this phase (called "heat of fusion"), particles are gaining (or losing) thermal energy but the energy is not altering the kinetic energy of particles (which would change the temperature) but rather it is altering the potential energy of the particles (water or liquid has more potential energy than ice or solids).

Answer 3

The same temperature. The direction that the processes will go depends on whether heat is being supplied to melt the ice or if it being withdrawn to freeze the water.

Answer 4

0 degrees C. This is actually the temperature of ice water at sea level.