Title: Solutions Containing Ions

Purpose Statement: The purpose of this experiment is to show that ions in solution conduct an electric current.

Hypothesis:  When ions move freely in aqueous solution, they can conduct an electric current and light up a bulb because moving charges generate electricity in solution.

Variables:

IV: The type of ions in solution

DV: The ability and extent to which the solution conducts electricity

Control: The accepted conductivity of the solution. 

Materials: well plate, conductivity tester, pipet, aqueous solutions

Safety:  Wear your safety goggles whenever heat or glassware is used.

Procedure: 

1.  Add 1 full pipet of DI water to one of your well plates.  Place the lead ends of the conductivity tester into the solution.  Record the color (s) observed on the tester.  Use the key on the back of the tester to interpret the results.

2. Rinse the leads in a beaker of clean water before moving on to the next solution.

3.  Repeat Step 1-2 with the other solutions provided.