Thermodyamics Chapter
BIg Idea 5: The laws of thermodynamics describe the essential role of energy and explain and predict the direction of changes in matter.
Enduring Understanding 5A: Two systems with different temperatures that are in thermal contact will exchange energy. The quantity of thermal energy transfered from one system to another is called heat.
Enduring Understanding 5B: Energy is transferred between systems either through heat transfer or through one system doing work on the other system.
Enduring Understanding 5C: Breaking bonds requires energy, and making bonds releases energy.
Enduring Understanding 5D: Electrostatic forces exist between molecules as well as between atoms or ions, and breaking the resultant intermolecular interactions requires energy.
Enduring Understanding 5E: Chemical or physical processes are driven by a decrease in enthalpy or and increase in entropy or both.
Big Idea 6: Any Bond or intermolecular attraction that can be formed can be broken. These two processes are in a dynamic competition, sensitive to initial conditions and external disterbances.
Enduring Understanding 6D: The equilibirum constant is related to temperature and the difference in Gibbs free energy between reactants and products. (See Thermodynamics)
Objective: The objective of this chapter is multi layered but could be summed up by
- How much energy is absorbed/released when a reaction proceeds?
- Will a reaction proceed?
Of course to answer these questions is always a little more difficult.
- How much energy is absorbed/released when a reaction proceeds.
- This is simply a stoichiometry question.
- Be able to utilize Hess's law to determine overall energy change.
- Will a reaction proceed?
- Determine/understand enthalpy, Entropy, and Gibbs Free Energy.
- Understand the relationships between equilibrium and overall energy.
Pre-Reading
- Your pre-reading assignment is chapter 17. Sections 1 & 2.
- Take notes. They will be used on the pre-reading test the 1st day of next chapter.
- complete pre-reading assignment. Due the day of the test (Kinetics MC Test)
|