Show that solutions of salts in water can conduct electricity
On adding the salt solution to distilled water then electricity starts flowing through the water and the bulb starts glowing
Activity: To show that by adding salt solution to distilled water then electricity starts flowing.
Apparatus required: Distilled water, Salt solution, Glass beaker, Bulb, Battery, and Copper Wire.
- First step: I took a glass beaker.
- Second step: Then I Put distilled water in a glass beaker.
- Third step: After it, I connect the copper wire to the positive and negative terminals of the bulb.
- Third step: I Put one terminal of the wire connected to the bulb in the distilled water in the glass beaker and attach the other to the battery.
- Fourth step: I attached a piece of copper wire to the battery and put the other end of the wire in the glass beaker with distilled water, the bulb did not glow.
- Fifth step: I added salt solution in distilled water in the glass beaker, bulb started to glow.
Observation: The bulb will not glow when the beaker is filled with distilled water because distilled water does not contain any ions for the conduction of the electricity.
But on adding the salt solution to the distilled water bulb starts glowing because the salt solution contains free ions and on adding it to the distilled water then electricity starts flowing and the circuit completes.
Result: The salt solution is a good conductor of electricity.