“Melting point of ice” is actually a more accurate way of stating 0 Celsius, as plenty of reasons why liquid water can exist at that temp or colder. Ever see one of those movies of flash freezing water bottles…like this: https://youtu.be/1EhKbHSy34w
That’s not because it coincidentally got to or below 0 Celsius right when the guy put it on camera and banged it, it was already colder than 0
Have you ever made homemade ice cream?
You take the ice, 0°C. But then you add salt to the ice, and the temperature dropped to below 0°C.
This is the same reason the Arctic sea water is colder, because it is salty. Adding salt to the water changes the freezing point.
0°C is only the freezing point of PURE WATER, not salt water. The actual freezing temperature depends on the concentration of salt that is dissolved.
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