Boiling water is the process of heating water until it reaches its boiling point, which is typically 100 degrees Celsius (212 degrees Fahrenheit) at sea level. At this temperature, water molecules gain enough energy to transition from a liquid state to a gaseous state, forming steam. This process is commonly used in cooking, sterilization, and various industrial applications. When water boils, bubbles form and rise to the surface, releasing steam into the air. The boiling point can change with altitude; for example, in high-altitude areas, such as the Rocky Mountains, water boils at a lower temperature due to decreased atmospheric pressure.