What is the boiling point of water in degree Celsius?

The boiling point of water is 100°C (degree Celsius) at standard atmospheric pressure (1 atmosphere or sea level). At this temperature, liquid water changes into water vapour through the process called boiling.

The boiling point can change depending on external conditions such as air pressure. At higher altitudes, where atmospheric pressure is lower, water boils at a temperature below 100°C. Under higher pressure, water requires a higher temperature to boil.

Boiling occurs when water molecules gain enough heat energy to overcome the forces holding them together in the liquid state and escape as gas. Understanding the boiling point of water helps students learn about states of matter, temperature, heat transfer, and physical changes in science.