National Institute of Open Schooling
Chemical Equilibrium
Le Chatelier's interest in thermodynamics and building materials such as cement and plaster led to the Le Chatelier Principle in 1884. Activity 13 in a series of 36 extensively explores chemical equilibrium. Learners read about...
Curated OER
Chemical Equilibrium Worksheet
In this chemical equilibrium worksheet, learners match the 8 terms on the left with the correct description on the right. They write short answers and fill in the chart for 27 questions.
Santa Monica College
Chemical Equilibrium and Le Chatelier’s Principle
Henri-Louis Le Chatelier wrote many papers throughout his 85-year life, but he is remembered for one of his earliest discoveries, now known as Le Chatelier's Principle. The final activity in an 11-part series encourages young chemists to...
Curated OER
Chemical Equilibrium Worksheet #1
In this chemical equilibrium activity, students list 4 ways to increase the concentration of the product. They answer 9 multiple choice questions about equilibrium reactions.
Curated OER
Chemistry Lab: Chemical Equilibrium
Young scholars investigate the effects of adding or removing a reactant or a product on chemical equilibrium. In this equilibrium lesson plan, students add or remove ions to solutions to determine the effects on equilibrium. They make...
Pingry School
Chemical Equilibrium
We know about the light spectrum, the age spectrum, and sound spectrum, but do chemical reactions also occur on a spectrum? Young scientists experiment with partial reactions on a spectrum and observe the color changes. Then, they...
Science Geek
Equilibrium and Le Chatelier's Principle
Time to shake up the status quo with a presentation that describes Le Chatlier's Principle and has pupils examine situations in which equilibrium is upset. Four examples show different stresses to the reaction and the resulting shift.
Curated OER
Equilibrium Practice
In this chemical reactions worksheet, students determine solubility product expressions, equilibrium constants, and equilibrium concentrations. This worksheet has 15 multiple choice questions and 3 problems to solve.
Curated OER
Spectrophotometer Determination of an Equilibrium Constant
Students determine an equilibrium constant using a spectrophotometer. For this equilibrium lesson plan, students calibrate a spectrophotometer with 5 solutions in order to prepare the spectrophotometer for the experiment. Students...
Curated OER
Chemical Equilibrium Homework Problem Set
In this chemistry worksheet, students write an equilibrium expression for each of the chemical reactions listed. Then they use the equilibrium constant to calculate the equilibrium pressure of each species under the given conditions.
Curated OER
Equilibrium: What Is It?
Tenth graders investigate chemical, physical and mechanical equilibrium. In this equilibrium lesson, 10th graders participate in a physical activity to show equilibrium by some students standing and some students sitting at the same...
Curated OER
Chemical Equilibrium
In this chemical equilibrium worksheet, students review hydration, dissociation, and colligative properties. Students also review Le Chatelier's principle. This worksheet has 15 short answer questions and 12 problems to solve.
Curated OER
Calculating Equilibrium Constants
In this chemical reactions worksheet, young scholars write the equilibrium constant expression for reactions and determine the direction the reaction will proceed to achieve equilibrium. This worksheet has 5 problems to solve.
Curated OER
Equilibrium Problems
In this equilibrium worksheet, students determine the equilibrium concentrations and the equilibrium constant for the given reactions. This worksheet has 5 problems to solve.
Virginia Department of Education
Equilibrium and Le Chatelier’s Principle
The best part of learning about equilibrium is that nothing changes. Young chemists observe four demonstrations during this lesson: equilibrium in a saturated solution, equilibrium with an acid-base indicator, equilibrium with cobalt...
National Institute of Open Schooling
Spontaneity of Chemical Reactions
Do spontaneous reactions really occur? Activity 12 in a series of 36 focuses on spontaneity of chemical reactions. Learners read about, discuss, and answer questions pertaining to entropy, explain the third law of thermodynamics, explore...
Curated OER
Chemical Equilibrium
In this chemical reactions worksheet, students determine the value of the equilibrium constant and determine if the equilibrium equation given will lead to a reaction. This worksheet has 27 problems to solve.
Curated OER
Equilibrium
In this equilibrium worksheet, students determine the effect of adding or subtracting items from a reaction. Students determine the equilibrium constant for given reactions. This worksheet has 13 problems to solve.
Curated OER
2002 U.S. National Chemistry Olympiad National Exam - Part I
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...
Curated OER
2001 U.S. National Chemistry Olympiad National Exam Part II
Only eight problems are on this competitive national chemistry exam. It required the balancing of chemical equations, solving stoichiometry questions, and more. This is part two of three of the national exam. Also available is a local...
Curated OER
2002 U.S. National Chemistry Olympiad National Exam - Part III
Two laboratory problems are put forth for chemistry students. They are to plan and carry out an experiment that will answer each of the questions. The first asks them to investigate a relationship between the surface area of a potato and...
Curated OER
Approaching Equilibrium
Contrary to a common popular belief, equilibrium does not mean a reaction has stopped. An interesting presentation covers reactant concentrations and product concentrations. It describes the equilibrium as when the forward rate equals...
Curated OER
Le Chatelier's Principle
In this chemical equilibrium activity, students read about how additions to a system can shift the equilibrium. Students then apply the Le Chatelier's Principle to solve 5 problems.
Chemistry Collective
Virtual Lab: Cobalt Chloride and Le Chatelier’s Principle
Colorful cobalt complexes make a great way to learn about Le Chatelier! Eager chemists explore equilibrium through a virtual lab. Individuals use solutions with two different concentrations and observe the color changes that indicate...
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