The freezing point of water is 0 degrees Celsius (32 degrees Fahrenheit). This is the temperature at which water changes its state from a liquid to a solid, forming ice. At this temperature, the molecules in water slow down enough to form a rigid structure known as a crystalline lattice, which is why ice is less dense than liquid water and floats. The freezing point of water is a critical reference point in science and everyday life, affecting weather patterns, living conditions, and human activities, such as agriculture and transportation.