What does a phase change look like at the molecular level? We'll look at the molecular structure in solid, liquid, and gas phases, and see how the kinetic energy of the particles changes. We'll talking about melting, vaporization, condensation, and freezing.

Why do different liquids boil at different temperatures? It has to do with how strongly the molecules interact with each other. Find out all the different ways, and how to use them to make predictions about matter!

This chemistry video tutorial provides a basic introduction into the heating curve of water and the cooling curve of water. As heat is added to water, the temperature increases which increases the kinetic energy of the molecules. At the freezing point of ice, adding heat will not change the temperature but will increase the potential energy of the molecules as ice melts to liquid water.

This chemistry video tutorial provides a basic introduction into the heating curve of water and the cooling curve of water. As heat is added to water, the temperature increases which increases the kinetic energy of the molecules. At the freezing point of ice, adding heat will not change the temperature but will increase the potential energy of the molecules as ice melts to liquid water.