Energy and Change of State  

In the Energy and Change of State form, you deal with the energies needed to melt or boil a substance. You need the mass and the molecular weight of the substance in question. You also need the enthalpy of fusion or vaporization. These numbers are specific for different materials. Different substances have different capacities for heat. Some can hold more than others. This data is available in the Enthalpies data chart at the bottom of the main screen. They are also available in a textbook.


