Objectives:
(1) Students observe and experience ionic compounds in "real life." (2) Use technology to measure properties of ionic compounds.
Lesson:
(1) Teach student to use resistance meter (Ohm meter) to meausre conductivity in pure water, dry crystal A, crystal A dissolved in water, dry crystal B, crystal B dissolved in water; 5 tests in total. Take all measurements on 2000 kΩ setting. Record measurements.
Assignment:
(1) Make a graph of your data; due next class (data and graph).