This is a thematic unit on cave chemistry that includes complete units on solutions, and acids and bases. It requires around two weeks of instruction. The 5E inquiry model is used for lesson planning. Engagement, explorations, explanations, extensions, and evaluations are provided. Guided notes, articles to read, presentation slides, lab activities, paper activities/worksheets, crossword puzzles, videos, tests, answer keys, review sheets, lesson plans, daily agendas, a project, and more are incl