What happens to water when you heat it to 100°c?

When you heat water to temperature over 100°C, it starts to boil, increasing pressure in the container it is being heated up in. If you put a hole in the container with the boiling water, the water will start to evaporate and that'll cause the temperature to drop. If you try to maintain constant temperature, after some time all water will completely evaporate.

Explanation:

The reason water boils is because normally water has a lot of air dissolved on it—then, as the boiling point of water is reached (100° Celsius or 212° Fahrenheit), water vapor starts to form inside the liquid in the form of bubbles.The reason the water evaporates is because when a molecule near the surface absorbs enough energy to overcome the vapor pressure, it will escape and enter the surrounding air as a gas—evaporation of water occurs when the surface of the liquid is exposed, allowing molecules to escape and form water vapor; this vapor can then rise up and form clouds!Please mark me brainliest :3