Describe an activity to show that solutions of salts, in water, can conduct electricity.


Take a beaker and fill it half with water. Dissolve some common salt (sodium chloride) in this water. Connect two graphite rods with the two terminals of a battery, with a zero-watt LED bulb in between, as shown in the figure. Now dip these graphite rods in the solution of sodium chloride. The bulb starts glowing indicating the flow of electric current. This shows that a solution of sodium chloride can conduct electricity.

Draw Figure from page no 51 from your book.