H 2 O (s) H 2 O ( ) H 2 O (g). A-B = Solid ice, temperature is increasing. Particles gain kinetic energy, vibration of particles increases. Heating.
Energy Requirements for changing state:
Heat in Chemical Reactions. Theory of Heat The theory of heat is based in how particles move This theory is called Kinetic Molecular Theory Essentially,
Liquids and Solids