Entropy and Gibbs free energy

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Define entropy as a measure related to the dispersal of energy or disorder in a system and describe entropy changes for changes of state and for reactions.
Predict the sign of system entropy change from changes in state, number of gaseous molecules and molecular complexity.

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Calculate total entropy change from system and surroundings terms, using $\Delta S_{\text{total}}=\Delta S_{\text{system}}+\Delta S_{\text{surroundings}}$ and $\Delta S_{\text{surroundings}}=-\dfrac{\Delta H}{T}$ where appropriate.

Define Gibbs free energy change and use $\Delta G=\Delta H-T\Delta S$ with consistent units to calculate feasibility under stated conditions.

Interpret the sign of $\Delta G$ and explain how temperature can change whether a process is thermodynamically feasible.

Distinguish thermodynamic feasibility from reaction rate when discussing whether a reaction will occur.

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