Hewitt Drew-It! PHYSICS Screencasts
Change of Phase

77. Evaporation & Condensation
Why evaporation cools, and condensation warms.

78. Crunching Can & Dipping Bird
Yum examples of evaporation and condensation.

79. Energy of Phase Changes
The roles of heat of fusion, and vaporization, in changes in phase.

80. More on Phase Changes
Phase changes are explained and expressed in equation form.