This comprehensive Unit 9 bundle provides a complete, AP‑aligned sequence of data‑driven practice for every Learning Objective from 9.1 through 9.11. Each LO includes two high‑quality FRQs built from clean, intuitive data sets: phase changes, gas expansion, dissolution, entropy calculations, temperature‑dependent processes, weak acid equilibria, redox spontaneity, coupled reactions, and electrochemical cells, paired with detailed scoring guidelines that model strong AP reasoning. Students build