What happen to water when it cools?

Answer 1

- Water, in liquid form, decreases in density as it cools, until it reaches four degrees Celsius. At this point, as it begins to freeze in to ice, the molecules become hexagonal in structure and the density actually increases. This is why ice floats in water.

- Water, in gas form, condenses when it becomes cooler. As the temperature decreases, the speed of the water molecules also slow down. When they're slower, they get attracted to each other more easily, and this attraction between the molecules is what turns the gas into liquid.

Answer 2

When water cools, the molecules slow down and come closer together, causing the water to contract and become denser. As it reaches its freezing point, the molecules arrange into an orderly, crystalline structure, forming ice.

Answer 3

Cooling slows the molecules down, and when it gets cold enough the molecules stick together to form ice crystals.