Other
University of Siegen: An Endothermic Reaction
This resource provides information on a rather interesting spontaneous endothermic reaction, involving cobalt (II) chloride and thionyl chloride.
Other
University of Siegen: Enthalpy of Solution
This resource provides a physical reaction. Hydrous and anhydrous calcium chloride react with water to produce physical exothermic and endothermic reactions.
University of Minnesota
University of Minnesota Outreach: Endothermic and Exothermic Reactions
A nice juxtaposition of endo- and exothermic reactions. Outlines two demonstrations. Barium hydroxide, sodium acetate, ammonium nitrate, ammonia.