Applications of Reactions

GSE Chemistry Standards:

SC2. Obtain, evaluate, and communicate information about the chemical and physical properties of matter resulting from the ability of atoms to form bonds. 

g.  Develop a model to illustrate the release or absorption of energy (endothermic or exothermic) from a chemical reaction system depends upon the changes in total bond energy. 

SC4. Obtain, evaluate, and communicate information about how to refine the design of a chemical system by applying engineering principles to manipulate the factors that affect a chemical reaction. 

a. Plan and carry out an investigation to provide evidence of the effects of changing concentration, temperature, and pressure on chemical reactions. 

b. Construct an argument using collision theory and transition state theory to explain the role of activation energy in chemical reactions. 

c. Construct an explanation of the effects of a catalyst on chemical reactions and apply it to everyday examples. 

d. Refine the design of a chemical system by altering the conditions that would change forward and reverse reaction rates and the amount of products at equilibrium. 

SC5. Obtain, evaluate, and communicate information about the Kinetic Molecular Theory to model atomic and molecular motion in chemical and physical processes. 

a. Plan and carry out an investigation to calculate the amount of heat absorbed or released by chemical or physical processes. 

Learning Targets:

1. I can recognize and communicate about evidence of energy changes in a chemical reaction.

2. I can observe and measure temperature changes in a chemical reaction.

3. I can classify reactions as endothermic or exothermic based on my observations.

4. I can determine whether heat is lost or gained in a chemical reaction based on temperature data.

5. I can describe and define the terms: chemical reaction, reaction rate, concentration, and catalyst.

6. I can design and conduct an experiment in which I examine the factors that affect reaction rate, namely the temperature, particle size, concentration, and catalysts.

7. I can analyze graphical data from experiments to determine how reaction rates vary based on those factors.

8. I can describe how frequency of collisions and energy of collisions affect reaction rates.

9. I can identify a catalyst within a reaction.

10. I can determine the effect of catalysts is to increase the reaction rate.

11. I can apply Hess’ Law to determine the amount of energy lost or gained during a chemical reaction using the addition of elemental steps of a reaction and using enthalpy of formation values.

12. I can draw and interpret data from a reaction coordinate diagram.

13. I can identify the transition state, enthalpy of reactants, enthalpy of products, activation energy, and total enthalpy of the reaction from a reaction coordinate diagram.

14. I can relate the enthalpy of a reaction in terms of bond energies of reactants and products.

15. I can describe the concept of dynamic equilibrium.

16. I can use LeChatelier’s principle to predict the effect of adding either a product or reactant to a reaction at equilibrium.

17. I can use LeChatelier’s principle to predict the effect of a temperature change on a reaction at equilibrium, given a chemical equation showing the change in heat for the reaction.

18. I can use LeChatelier’s principle to predict the effect of changing the pressure on gaseous reactions.