John M. answered • 09/28/18
Tutor
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H.S. Chemistry, A.P. Chem, Physical Science and College Freshman Chem
You would need some sort of device, like a low wattage light bulb, that's screwed into a socket. The terminals of the socked would be wired to two separate metals, such as copper and the other terminals on the socket wired to an electrical cord with a plug that would be plugged into an AC outlet. By inserting the copper electrodes into various liquids, you could see whether the bulb lights or not and, if it does, to what degree.
