Why does ice melt into water and then turn into steam?
Water's Three Dances
Why does ice melt into water and then turn into steam?

Here's a question that hides inside every ice cube: how can one thing be hard, then runny, then a puff of cloud — without ever changing what it's made of? The secret is that water is always water. It's just throwing very different kinds of parties.
Zoom in closer than your eyes can go, and water is made of trillions of tiny pieces called molecules. Picture them as tiny round dancers. They are always, always jiggling — and the warmer it gets, the wilder they jiggle. Heat, really, is just jiggle.
