Classroom Resources: Equilibrium


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  • Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Activity: Le Châtelier's Principle Particulate View

    In this activity, students will gain a better understanding of how applying a stress to a reaction system will shift the equilibrium. The students will be able to predict the direction a reversible reaction will shift based of the value of the reaction quotient (Q) and the equilibrium constant (K). This activity should be completed after students have completed the activity “Equilibrium Particulate View.”

  • Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Activity: Equilibrium Particulate View

    In this activity, students will gain a better understanding of what it means for a reaction to be in a state of equilibrium and how a reaction progresses over time to establish equilibrium. Students will also relate the equilibrium constant to the amount of products and reactants present at equilibrium.

  • Le Châtelier's Principle, Establishing Equilibrium | High School

    Lab: A Greener Le Châtelier’s Principle Lab

    In this lab, students will explore Le Châtelier’s Principle using non-toxic materials, while still visualizing the equilibrium shifts through color changes. Traditionally, equilibrium experiments and Le Châtelier’s Principle are illustrated using chemicals that undergo color changes as the equilibrium position shifts such as cobalt (IV) chloride and iron (III) thiocyanate. While these reactions effectively demonstrate Le Châtelier’s Principle, they utilize reagents that are toxic.

  • Le Châtelier's Principle, Establishing Equilibrium | High School

    Simulation: Predicting Shifts in Equilibrium: Q vs K

    In this simulation, students will take a 15 question quiz. Each quiz question has two parts. The first part requires the student to calculate the value of the reaction quotient, Q. In the second portion of the question, the students will compare the value of Q to the equilibrium constant, K, and predict which way the reaction will shift to reach equilibrium. The simulation includes five different reactions which each have three scenarios: Q > K, Q = K, and Q < K.

  • Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Lesson Plan: Equilibrium Unit Plan

    The AACT high school classroom resource library and multimedia collection has everything you need to put together a unit plan for your classroom: lessons, activities, labs, projects, videos, simulations, and animations. We constructed a unit plan using AACT resources that is designed to teach equilibrium to your students.

  • Le Châtelier's Principle, Equilibrium Constants | High School

    Activity: Equilibrium in a Beaker

    In this activity, students will model equilibrium reactions using plastic chips to represent atoms. The goal of the lesson is to connect the symbolic model of an equilibrium reaction to its particle model.

  • Le Châtelier's Principle, Equilibrium Constants, Reaction Quotient | High School

    Lesson Plan: Q, K, and Le Chatelier

    In this lesson students practice applying Q vs K as an explanatory tool in a simulation and demonstration. In both activities, students will consider how a change in concentration of one species subsequently effects all the species as equilibrium is reestablished.

  • Catalysts, Entropy, Equilibrium Constants, Enthalpy, Activation Energy, Energy Diagrams, Reaction Quotient, Spontaneous vs. Non-spontaneous Reactions | High School

    Lesson Plan: Making Connections in Kinetics, Equilibrium and Thermochemistry

    In this lesson students will understand the connections between the equilibrium constant (K) and the reaction quotient (Q) as well as how they determine the favorability of a reaction. Additionally students will be able to determine if a reaction is kinetically favored or thermodynamically favored.

  • Reaction Rate, Exothermic & Endothermic, Le Châtelier's Principle, Hess's Law, Activation Energy | High School

    Lab: Kinetics and Equilibrium

    In this lab, students will investigate the reaction of the hydrogen sulfite ion (HSO3-) and the iodate ion (IO3-) to determine the effect that changing concentration and temperature has on the reaction rate.

  • Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Lesson Plan: Discovering Equilibrium

    In this lesson students manipulate sets of given conditions to discover what equilibrium is, and how the equilibrium is established from different starting conditions. Students then refer back to the activity as the foundation framework for the rest of Essential Knowledge 6.A, 6.B.1 and 6.B.2. This lesson focuses on both a qualitative and quantitative understanding of equilibrium.

  • Le Châtelier's Principle, Establishing Equilibrium | High School

    Activity: Simulation Activity: Predicting Shifts in Equilibrium: Q vs K

    In this simulation, students will take a 15 question quiz. Each quiz questions has two parts. The first part requires the student to calculate the value of the reaction quotient, Q. In the second portion of the question, the students will compare the value of Q to the equilibrium constant, K, and predict which way the reaction will shift to reach equilibrium. The simulation includes five different reactions which each have three scenarios: Q > K, Q = K, and Q < K.

  • Establishing Equilibrium | High School

    Activity: Equilibrium Introduction

    In this activity, students perform a hands-on activity that models chemical equilibrium based on the article Equilibrium: A Teaching/Learning Activity by Audrey H. Wilson from the Journal of Chemical Education, Vol. 75, No. 9, September 1998.

  • Concentration, Reversible Reactions, Le Châtelier's Principle | High School

    Lab: Le Chatelier’s Soda

    In this lab, students will observe how the equilibrium of a chemical reaction is affected when a change in pressure, temperature, and concentration is applied to the system.

  • Establishing Equilibrium | High School

    Animation: Equilibrium Animation

    In this animation, students will visualize equilibrium with the help of water and a piece of chalk (calcium carbonate). **This video has no audio**

  • Observations, Chemical Change, Chemical Change, Reaction Rate, Acid Base Reactions, Limiting Reactant, Chemical Change, Indicators, Le Châtelier's Principle | High School

    Demonstration: Milk of Magnesia Magic

    In this demonstration, students will observe a color change in a milk of magnesia solution as vinegar is added.

  • Heat, Temperature, Exothermic & Endothermic, Activation Energy, Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Activity: Reversible Reactions Simulation

    In this activity, students will investigate how temperature, activation energy, initial amounts of products and reactants, and type of reaction (exo- or endothermic) effect the equilibrium position of a reaction using a simulation.

  • Heat, Temperature, Exothermic & Endothermic, Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient | High School

    Demonstration: Le Châtelier’s Principle

    In this demonstration, students will witness a system at equilibrium and apply different stresses to see how the equilibrium shifts.

  • Reaction Rate, Reversible Reactions, Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Graphing | High School

    Lab: Dynamic Equilibrium Simulation

    In this lab, students will explore equilibrium using paper clips to mimic a chemical reaction.

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