What is the freezing point of water in Celsius?

The freezing point of water in Celsius is defined as 0 degrees. This is a fundamental aspect of the Celsius temperature scale, which was designed around the freezing and boiling points of water. In this system, 0 degrees Celsius marks the temperature at which pure water freezes under standard atmospheric pressure.

The other temperatures listed correspond to different temperature points: 32 degrees is the freezing point in Fahrenheit, 100 degrees is the boiling point of water in Celsius, and 50 degrees has no particular significance regarding water's phase changes. Understanding this context helps to understand not only the answer but the comparison between different temperature scales as well.