Login or Register

800.334.5551 Live Chat (offline)

Chemical Equilibrium and Le Châtelier’s Principle Kit

Item # 840709 Exclusive This product is exclusive to Carolina Biological Supply. With Digital This kit includes 1-year access to digital resources including videos, digital teacher’s manuals, printable student guides, interactive lessons, editable assessment questions, and more.

Product Highlights

  • Observe a dynamic equilibrium and Le Châtelier’s principle in action.
  • High school modeling activity with manipulatives and enough materials for 10 lab groups.
  • Carolina Kits 3D®—Labs that use phenomena to support NGSS and 3-dimensional instruction.



In stock and available to ship.

A skier’s light-headedness at altitude serves as the phenomenon underlying this lab. The human body is a complex equilibrium system that is constantly changing and constantly working to establish and maintain stability. Students will conduct a series of 3 investigations in which they evaluate a chemical system, make modifications to an established equilibrium, and then utilize what they have learned by applying it to the human body to answer the driving question, “What variables affect a chemical reaction system and how does the system respond when something changes?”

Time Requirement
Total, 190 minutes. Teacher prep, 50 minutes. Pre-lab, 20 minutes. Investigations (3), 120 minutes.

Digital Resources
Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS. Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, phenomenon videos, simulations, and post-lab analysis and assessments.

Performance Expectation(s)

Crosscutting Concepts
Stability and Change

Disciplinary Core Ideas
PS1.B: Chemical Reactions

Science and Engineering Practices
Constructing Explanations and Designing Solutions

Learning Objectives

  • Create a stable chemical system and observe how the stability of a chemical system changes as a stressor is manipulated.
  • Construct explanations through student-generated sources of evidence to justify that all chemical reactions are in a dynamic equilibrium and can be altered by various conditions.

Prerequisite Knowledge and Skills
Students should be able to write and balance chemical equations; understand, read, and write chemical dissociation equations; and have a general understanding of acids, bases, pH, and chemical kinetics.

  • This item is only available from Carolina Biological Supply Company.
Components Qty Included?
Milk of Magnesia, 4 oz 1 Included
Bromthymol Blue, 0.04%, 15 mL 1 Included
0.1 M Sodium Hydroxide, 15 mL 2 Included
0.1 M Acetic Acid, 4 oz 1 Included
Lugol Solution, 7.5 mL 2 Included
White Vinegar, 1 pt 1 Included
Dropping Pipets 42 Included
Petri Dishes, 60 x 15 mm 20 Included
Wooden Stirrers 10 Included
pH Paper Dispenser, pH 1-14 1 Included
pH Charts, 1-14 10 Included
Starch Solution, 1%, 120 mL 1 Included
Tea Bag, Family Size 1 Included
Jelly Tray Sheets 4 Included
Carolina Science Online® Resources (1-year subscription) 1 Included
Teacher's Manual with Reproducible Student Guide 1 Included
Graduated Cylinders 10 Needed, Not Included
Wash Bottles 10 Needed, Not Included
Laboratory Thermometers 10 Needed, Not Included
Bunsen Burners or Hot Plates 10 Needed, Not Included
Ring Stand with Rings 10 Needed, Not Included
Wire Gauze 10 Needed, Not Included
Beakers (at least 250 mL) 20 Needed, Not Included
Erlenmeyer Flasks Needed, Not Included
Safety Goggles Needed, Not Included
Lab Aprons Needed, Not Included
Paper Towels Needed, Not Included
Scissors Needed, Not Included
Markers Needed, Not Included
Ice Needed, Not Included
Document Camera or Overhead Projector Needed, Not Included