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Inquiries in Science®: Attaining Equilibrium Kit

Item # 251213 Exclusive

Grades 9–12. Students investigate reversible reactions and equilibrium. Using this knowledge, they investigate Le Châtelier’s principle, shifting equilibrium through the common ion effect and by varying the concentration of reactants. Kit includes materials for at least 30 students working in groups.



In stock and available to ship.

  • Investigate Le Châtelier’s principle using colorful, reversible reactions
  • Determine the solubility product of a salt
  • Help students meet the Next Generation Science Standards Performance Expectation HS-PS1-6: Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium

Grades 9–12. With this guided-inquiry kit, students investigate reversible reactions and equilibrium. They first shift the equilibrium reaction of a weak organic acid, and then determine the solubility product of a slightly soluble base. Students also investigate Le Châtelier’s principle, shifting equilibrium through the common ion effect and by varying the concentration of reactants. In the capstone activity of this kit, students design an experiment using Le Châtelier’s principle to determine whether an equilibrium reaction is exothermic or endothermic. Kit includes enough materials for at least 30 students working in groups. Receive a FREE digital teacher’s manual and student guide with kit purchase.

   This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. For substitution suggestions, please call us at 800.334.5551 (8am to 8pm, ET, Monday-Friday).

  • This item is only available from Carolina Biological Supply Company.
  • This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses. Visit our Login & Registration page to learn how to create a Login and link it to an approved school or business account.

Product Families Featuring This Item:


Kit contains materials for 30 students working in 10 groups of three. If your class size differs, adjust the size of the groups accordingly.

Components Qty Included?
0.1 M Hydrochloric Acid, 15 mL 10 Included
0.1 M Sodium Hydroxide, 15 mL 5 Included
0.5 M Copper (II) Chloride Dihydrate, 15 mL 5 Included
0.1 M Silver Nitrate, 15 mL 3 Included
Bromthymol Blue, 0.04%, 15 mL 3 Included
Phenolphthalein, 1%, 15 mL 3 Included
Lime Water, 30 mL 5 Included
Weigh Boats 30 Included
Test Tubes 40 Included
Teacher’s Manual with Reproducible Student Guide 1 Included
NaCl, 10 g 1 Needed, Not Included
Test Tube Racks 10 Needed, Not Included
Felt Tip Pens 10 Needed, Not Included
Beakers (100, 150, or 250 mL) 10 Needed, Not Included
Graduated Cylinders 10 Needed, Not Included
Paper Clips 10 Needed, Not Included
Dropper Pipets 10 Needed, Not Included
Balances (sensitivity 0.1 g or greater) 1 Needed, Not Included
Water Needed, Not Included
Paper Towels Needed, Not Included

Inquiries in Science Series

Inquiries in Science® Series Kits

Inquiries in Science® is our exclusive series of hands-on kits specifically designed to help high school students understand abstract, hard-to-grasp science concepts. The series tracks well with most textbooks, and kit topics reflect state science standards and extensive educator input. Since Inquiries in Science® is modular, you can use the kits individually, as a strand, or as a series to teach biology, chemistry, and environmental science.

Improve Student Achievement

Field-tested in classrooms nationwide, Inquiries in Science® employs guided inquiry based on the 5E learning cycle of engage, explore, explain, extend, and evaluate. This inquiry-based approach also promotes STEM (science, technology, engineering, and math) practices. It enables students to:

  • Consider a real-world question or problem
  • Plan and conduct an investigation and gather data
  • Understand the science concept by analyzing data and communicating findings
  • Apply their findings to the original real-world question or problem and master the science concept

Inquiries in Science® helps students build critical-thinking and problem-solving skills, and encourages creativity, collaboration, and teamwork. It creates an environment in which you and your students work together as active learners.

Disciplines and topics addressed by the kits were organized and selected based on data from numerous sources, including the National Research Council's National Science Education Standards, AAAS's Project 2061 Science Benchmarks, NAEP's Science Framework, and state science education standards from across the US. In addition, the Inquiries in Science® content and activities reflect the science practices and engineering practices, core ideas, and crosscutting concepts outlined by the National Research Council's A Framework for K–12 Science Education (2011) and the Next Generation Science Standards (2013).

Inquiries in Science® Components

  • Kit—Includes lab supplies (enough for at least 30 students working in groups) plus teacher's manual.
  • Kit Refill—Replenishes consumed materials
  • Multi Class Equipment Set—Includes extra lab supplies so you can use the kit in 1 additional class section per day. Note: You'll also need to order an extra kit refill for each additional class section. For example, to teach the same Inquiries in Science® kit in 3 biology sections on the same day, purchase 1 kit, 2 kit refills, and 2 multi class equipment sets.
  • Digital Teacher's Manual—FREE with kit purchase

Correlations to State Standards

Select the appropriate set of options below to view standards met by this product. After making selections, please do not use your browser's "Back" button to return to previous steps. Instead, use the blue links such as Content Unit Search to go back to a previous step in the search.

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