Water is made up of tiny, tiny, tiny little water molecules. Water molecules are called H20, which looks like this.
If water gets very hot, like when somebody puts a pot of water on the stove, it boils,
But what happens when water gets cold? Water freezes solid, like a rock—which we call ice, or water ice.
But water freezes, and turns to ice at 32 degrees—that’s cold enough for hat and mittens.
If the air is warm, like it is in the house, an ice cube will melt. That means the ice turns back into water!
If you put many ice cubes in warm air, they will melt, and become liquid again.
When the weather gets warm, snow and ice melts. First, it becomes slush,
Sometimes, rain freezes when it is falling. This is called freezing rain.