Unit 8: Thermodynamics
(Enthalpy & Entropy)
Key Learning Targets
Define enthalpy, ∆H. Calculate the enthalpy for a given chemical reaction using heats of formation. Calculate the enthalpy for a given chemical reaction using Hess’s Law. Explain what is meant by ‘spontaneous reaction” Define entropy, ∆S. Relate changes in entropy to changes in state, temperature, number of gas particles and characteristics of molecules. Calculate change in entropy, using a reference table. State the two driving forces for spontaneous reactions as enthalpy and entropy. Define free energy. Calculate free energy from a reference table of from values of enthalpy and entropy. Use enthalpy, entropy and free energy to predict if a reaction will occur spontaneously. State what values of enthalpy, entropy and free energy are favorable for a spontaneous reaction. 
Activities
Enthalpy Notes Guide Hess's Law Notes Guide Entropy & Spontaneous Reaction Notes Guide Heat of Reaction WS Hess's Law WS #1 Hess's Law WS #2 Thermodynamics WS Thermo WS KEY Hess's Law Lab PPTs/Other Handouts Enthalpy Notes PPT Hess's Law Notes PPT Entropy & Spontaneous Reaction Notes PPT Additional Assistance
