Featured in PASCO’s Chemistry through Inquiry Teacher Guide
Features over 25 inquiry based labs covering the fundamental concepts of lab skills, structure & properties of matter, chemical reactions and more.
Electrolyte v Non-Electrolyte
Use a conductivity sensor to determine which substances in sports drinks (water, sugars, or salts) are electrolytes.
In this activity, students determine which substances in sports drinks (water, sugars, or salts) are electrolytes. Through this investigation, students
- Differentiate an electrolyte solution from a non-electrolyte solution.
- Describe the effect concentration has on the conductivity of an electrolyte solution.
- Determine the approximate concentration of electrolytes in a sports drink.
Students conduct the following procedures:
- Measure the conductivity of salt solutions, sugar solutions, and a sample of a sports drink.
- Graph conductivity versus concentration.
- Use the graph to determine the concentration of electrolytes in a sports drink.
Sensors / Equipment Used:
PASPORT Conductivity Sensor
Utilizes platinum probes for greater range and improved accuracy in high & low concentrations.
Test tube, 20-mm × 150-mm - 6
Beaker for collecting rinse water
Test tube rack
Wash bottle filled with distilled (deionized) water
Sucrose solutions (0.02 M, 0.04 M, 0.06 M, 0.08 M, 0.10 M) - 25 mL of each
Sodium chloride solutions (0.02 M, 0.04 M, 0.06 M, 0.08 M, 0.10 M) - 25 mL of each
Distilled (deionized) water - 50 mL
Sports drink - 25 mL
The Associated Bundle:
Contains the sensors and probes needed to perform all 17 experiments in the Advanced Chemistry Teacher Guide and all 25 labs in the Chemistry through Inquiry Guide.