Click on "show values" in the concentration section. Drag the conductivity meter and place the positive +) and negative (-) ends in the water. Answer the questions below.

Question

The conductivity meter conducts electricity when placed in water. (1 point)
True
• False
Part B: "Macro" Tab
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.
There is evidence that NaCl is an ionic substance (1 point)
• True
• False
Adding more NaCl to the solution increases the number of ions in solution.
(1 point)
• True
• False
Part C: "Macro" Tab
Click "Reset All" in the bottom right corner, drag the conductivity meter into the solution again. Select "Sugar" as your solute and add the container of sugar to the solution.
Answers the questions below.
What is the visible evidence that sugar is not an ionic substance? (1 point)
• The conductivity meter lights up
• The conductivity meter does not light up

Answer 1

Here are the answers to your questions based on the scenario described:

Part A: The conductivity meter conducts electricity when placed in water.

• True: Water can conduct electricity to some extent, depending on the presence of ions.

Part B: There is evidence that NaCl is an ionic substance.

• True: When NaCl (table salt) is added to water, it dissociates into sodium (Na⁺) and chloride (Cl⁻) ions, which can carry electric current.

Adding more NaCl to the solution increases the number of ions in solution.

• True: More NaCl means more dissociated ions (Na⁺ and Cl⁻), which increases the solution's conductivity.

Part C: What is the visible evidence that sugar is not an ionic substance?

• The conductivity meter does not light up: Sugar (sucrose) does not dissociate into ions in solution, hence it does not conduct electricity and the conductivity meter remains unlit.

Feel free to ask if you have any other questions!