Provide students with introductory instruction on Molarity and conduct practice problems for how to create Molar solutions in the laboratory. Most chemistry books cover this topic.
What To Do:
Step 1: Ask students to create a data table with the following columns:
Step 2: Provide students with the solvent, solute, desired concentration (1M, 2M, 3M, etc. you choose), and desired volume of the following different solutions.
Step 3: Instruct them to calculate the grams of each solution using their balance.
Step 4: Accurately generate each of the solutions.
Step 5: Have them test the conductivity of each of these solutions using the conductivity meter.
Step 6: Discuss the difference between an ionic and covalent compound and the effect upon conductivity.
Step 7: Discuss the effect of concentration on conductivity.