Using a Teaching Model To Correct Known Misconceptions in Electrochemistry.

Describes a concrete teaching model designed to eliminate students' misconceptions about current flow in electrochemistry. The model uses a semi-permeable membrane rather than a salt bridge to complete the circuit and demonstrate the maintenance of cell neutrality. Concludes that use of the model led to improvement in students' understanding at the high school and university levels. (Contains 27 references.) (WRM)