Use the “solute” section to add salt to the water. “Shake” the container of salt to add. Observe what happens to the conductivity meter. Answer the questions below.
1. What do you observe about the conductivity meter as salt is added?
2. Does this solution conduct electricity? How do you know?
3. Does changing the amount of salt affect conductivity?
1. As salt is added to the water, the conductivity meter will show an increase in conductivity.
2. Yes, this solution conducts electricity. We know this because the conductivity meter is indicating a change in conductivity, which is a measure of how well a solution conducts electricity.
3. Yes, changing the amount of salt will affect conductivity. Increasing the amount of salt will increase the conductivity, while decreasing the amount of salt will decrease conductivity. The more ions present in the solution, the better it can conduct electricity.