Water Freeze

reLiquid molecules in particular like to stick together. Because they're always moving and moving quickly, they don't stick together well enough to become solid, but they stick together enough to remain together as a fluid. When liquid molecules are cooled enough, they start to line up and stick together into low-energy arrangements. They find ways in which they fit together well. The molecules form themselves into crystals, becoming solid, although they probably won't stick together right away. They have to line up in an appropriate pattern before they can become large crystals and before all of the liquid can become frozen solid. At this point, the liquid is frozen. An example of this is when the temperature is cold enough for water to freeze, but not all of the water freezes right away. You'll find pieces of ice floating in the cold water. As the liquid water molecules find ways to attach to the pieces of ice, the ice chunks become larger. Eventually, if the temperature stays at or below the freezing point, all of the water will freeze.

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