Water Conductivity and Testing Methods

The video explores whether water conducts electricity by comparing tap and distilled water. It explains that tap water contains dissolved salts, while distilled water is pure. The experiment involves setting up a test circuit to see if pure or salty water conducts electricity. The results show that pure water does not conduct electricity, but water with dissolved salt does.

What is the main difference between tap water and distilled water?

• Tap water contains dissolved salts, distilled water does not.

• Tap water is boiled, distilled water is not.

• Distilled water is filtered, tap water is not.

• Distilled water is carbonated, tap water is not.

Which of the following is NOT needed for the water conductivity experiment?

• A test circuit

• A beaker

• Aluminium foil

• A thermometer

What is the purpose of using aluminium foil in the experiment?

• To provide a larger conductive surface

• To add weight to the setup

• To prevent water evaporation

• To insulate the wires

What was the result when the aluminium foil ends were dipped into pure distilled water?

• The bulb flickered

• The bulb exploded

• The bulb did not light up

• The bulb lit up brightly

What conclusion can be drawn from the pure water test?

• Pure water conducts electricity only in large quantities

• Pure water is a good conductor of electricity

• Pure water conducts electricity only when heated

• Pure water does not conduct electricity

What was added to the distilled water to test its conductivity?

• Sugar

• Vinegar

• Salt

• Baking soda

What happened when the aluminium foil ends were dipped into the salty water?

• The bulb exploded

• The bulb flickered

• The bulb did not light up

• The bulb lit up

What conclusion can be drawn from the salty water test?

• Salty water does not conduct electricity

• Salty water conducts electricity

• Salty water conducts electricity only when heated

• Salty water conducts electricity only in large quantities

Which type of water was found to conduct electricity in the experiment?

• Tap water

• Pure distilled water

• Salty water

• Rainwater

What is the overall conclusion of the investigation?

• All types of water conduct electricity

• Only pure water conducts electricity

• Only water with dissolved salts conducts electricity

• No water conducts electricity