Teacher Notes
|
||||
---|---|---|---|---|
Teacher Notes
Publication No. 12674
Modeling EquilibriumClassroom Activity KitMaterials Included In Kit
Data table transparency sheet 1
Data table transparency sheet 2 Graph transparency sheet Plastic nickels, 500 Additional Materials Required
Beakers or other large containers, 8
Marker, transparency Teacher Tips
Correlation to Next Generation Science Standards (NGSS)†Science & Engineering PracticesAsking questions and defining problemsDeveloping and using models Planning and carrying out investigations Analyzing and interpreting data Using mathematics and computational thinking Disciplinary Core IdeasHS-PS1.B: Chemical ReactionsCrosscutting ConceptsScale, proportion, and quantitySystems and system models Performance ExpectationsHS-PS1-2: Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties. Sample DataGroup 1. What are the properties of a system at equilibrium? {12674_Data_Table_1}
*A “zero” round (before any reaction begins) is included to use as a starting point when graphing the results, if desired. Group 2. Does the position of equilibrium depend on the initial number of reactants?{12674_Data_Table_2}
*A “zero” round (before any reaction begins) is included to use as a starting point when graphing the results, if desired. Group 3. Does the position of equilibrium depend on the starting point?{12674_Data_Table_3}
*A “zero” round (before any reaction begins) is included to use as a starting point when graphing the results, if desired. Group 4. What happens when more reactants are added to a system at equilibrium?{12674_Data_Table_4}
*A “zero” round (before any reaction begins) is included to use as a starting point when graphing the results, if desired. {12674_Data_Figure_1}
Answers to Questions
Teacher HandoutsReferencesThis demonstration has been adapted from Flinn ChemTopic™ Labs, Volume 15, Equilibrium; Cesa, I., Ed., Flinn Scientific: Batavia, IL, 2003. Recommended Products
|
||||
Student Pages
|
---|
Student PagesModeling EquilibriumIntroductionWhat is equilibrium? What happens to the amount of reactants and products when equilibrium is reached? What if more reactants or products are added to a system already at equilibrium? In this activity, plastic nickels will be used as reactants and products in a reversible reaction to answer these questions and learn more about the fundamental nature of equilibrium. Concepts
Experiment Overview
Materials
Beakers or other large containers, 8
Data table transparency sheet 1* Data table transparency sheet 2* Graph transparency sheet* Marker, transparency Plastic nickels, 500* *Materials included in kit. Safety PrecautionsAlthough this activity is considered nonhazardous, observe all normal laboratory safety guidelines. ProcedureGroup 1. What are the properties of a system at equilibrium?
Student Worksheet PDF |