Assess students' ability to analyze and predict qualitative shifts in chemical equilibria using Le Chatelier's principle for changes in concentration, pressure (including volume and mole changes for gases), and temperature. Include tasks that require predicting shift direction, relative changes in reactant/product concentrations, reasoning with enthalpy for temperature effects, distinguishing gas-phase and heterogeneous systems, interpreting the reaction quotient, and recognizing that catalysts alter rate but not equilibrium position.