What happens to water when it is allowed to cool down below 0 degrees Celsius?

Answer 1

A change of phase from the liquid water to solid water (ice); the physical properties are of course different. The molecules in the unfrozen water are moving fast, but as it starts to cool off, the molecules begin to slow down until they don't move at all, thus, freezing.

Answer 2

I'm going out on a limb here but.... it freezes?

Answer 3

When you cool water to its freezing point, it turns into a solid (ice). As it turns from a liquid (water) to a solid (ice), it's called freezing. Pretty obvious really.

Answer 4

It turns to ice.

Answer 5

it freezes