The statement that best describes what occurs as the water boils is Thermal energy is increasing, and temperature is constant, therefore the correct option is B.
It is a temperature at which the pressure exerted by the external atmosphere is equal to the vapor pressure of the substance.
The boiling point depends on atmospheric pressure, temperature, bond strength, and vapor pressure of the liquid.
When the water boils by utilizing the latent heat at 100 degrees Celcius, the phase of the water is changing at a constant temperature, the phase change of water from liquid to gaseous state happens because of the increase in the thermal energy required in the form of latent heat.
Thus, The sentence that best sums up what happens when water boils is option B because thermal energy is rising and temperature is staying the same.
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