system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If water freezes at 0 degrees Celcius and ice melts at the same tempreature, what would happen if you took water and placed it in a place with exactly 0 degrees, no variations in temperature?

Would it turn into ice, then melt, then turn into ice again and so on?
gpt
If you add water to a zero degree environ, it will stay water. To freeze it you have to remove the latent heat of fusion. You have to continue to remove heat energy to get it to freeze into ice at zero degrees. Similar thing happens at the saturation point when water becomes steam, to it takes 1BTU/Lb of heat energy to change the temp one degree F, but 970 BTU to change that water at 100C into steam at 100C. This is why steam burns are so Mich more severe than water burns at the boiling point, the steam contains about 4x the thermal energy to burn you as the water.