Note: The particles on the side of the cup may look like a solid, but in this case, they are meant to represent a drop of liquid. Water molecules break away the surface of the water (evaporate) and ...

Heat melts a solid and turns it into a liquid. Cooling freezes a liquid into a solid. If water (liquid) is cooled, it changes to ice (solid). This change is called freezing. Water freezes at 0°C ...

Freezing happens at the same temperature as the melting point. When water is heated up, it changes state from a liquid to a gas, called steam. And this process is called evaporation. When a gas ...