Why is the temperature constant during the boiling of water?

When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. ... Therefore the temperature of the liquid remains constant during boiling. For example, water will remain at 100ºC (at a pressure of 1 atm or 101.3 kPa) while boiling.

The temperature remains constant during boiling of water even though heat is supplied constantly because all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour. Therefore all the heat energy provided to the liquid  increases the kinetic energy of the particles and temperature doesn't increase. So supplied heat energy is used to increase kinetic energy of molecules.

or

The temperature remains constant during boiling of water even though heat is supplied constantly because all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour. Therefore all the heat energy provided to the liquid  increases the kinetic energy of the particles and temperature doesn't increase. So supplied heat energy is used to increase kinetic energy of molecules.

Step-by-step explanation:

asdasdsad

step-by-step explanation: