Those of you out there who wear soft contact lenses have a handy source of platinum, making it easy to run this experiment.
In our house, we always have an excess of the lens disinfecting containers: the containers last ~3 months, the solution runs out more quickly and you get a new container with each bottle. The black plastic thingy at the bottom of the lens holder is a platinum coated piece of plastic, the catalyst for the lens disinfection reaction. Two of these will be our electrodes. Note these are not great electrodes, the resistance across the face of the platinum-coated thingies is 1000 to 2000 ohms. But they are good enough to demonstrate the reaction.
Step 1: Get the Platinum Electrodes
Step 2: Build the Electrode Holder.
Step 3: Electrodes Mounted in a Glass.
Step 4: Hooking Up the Electrodes and 9V Battery Holder.
Step 5: Add a Multimeter to Measure the Voltage.
Step 6: Add the Water.
Step 7: Start the Electrolysis.
Step 8: Making Bubbles.
Step 9: Make Electricity.