Physics » Heat and Heat Transfer Methods » Phase Change and Latent Heat

Summarizing Phase Change and Latent Heat

Summary

  • Most substances can exist either in solid, liquid, and gas forms, which are referred to as “phases.”
  • Phase changes occur at fixed temperatures for a given substance at a given pressure, and these temperatures are called boiling and freezing (or melting) points.
  • During phase changes, heat absorbed or released is given by:

    \(Q=\text{mL,}\)

    where \(L\) is the latent heat coefficient.

Glossary

heat of sublimation

the energy required to change a substance from the solid phase to the vapor phase

latent heat coefficient

a physical constant equal to the amount of heat transferred for every 1 kg of a substance during the change in phase of the substance

sublimation

the transition from the solid phase to the vapor phase

[Attributions and Licenses]


This is a lesson from the tutorial, Heat and Heat Transfer Methods and you are encouraged to log in or register, so that you can track your progress.

Log In

Share Thoughts