Conduction in Solutions Concept

Demonstrations in Conduction in Solutions

60W incandescent bulb on ceramic socket base (unlit) connected by wires to a glass tank with copper plates draped over opposite short sides, filled with clear water
Safety

Salt Water Circuit

Students see that tap water alone cannot carry enough current to light a bulb, but adding salt provides mobile ions that enable conduction. Increasing salt concentration increases brightness, showing the …
Pickle glowing bright yellow-orange on a sheet of paper, with nail electrodes and alligator clip leads attached
Safety

Glowing Pickle

AC current passed through a pickle causes it to buzz and glow bright yellow. Students see ionic conduction in action and observe the characteristic sodium D-line emission (589 nm) produced …