# 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, 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.

• 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**

• 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.