Introduction to Chemical Equilibrium Phenomena-Based Lesson: Reversible Chromatic Shift of Nitrogen Dioxide Gas in Submerged Thermal Baths Teacher Discussion Guide | Chemistry II | Grades 9–12

This is the teacher discussion guide, with lesson flow, facilitation questions, anticipated student ideas and model explanations for leading the class discussion for the Phenomena-Based Lesson in the Chemistry II (grades 9–12) chapter Introduction to Chemical Equilibrium, built around the phenomenon Reversible Chromatic Shift of Nitrogen Dioxide Gas in Submerged Thermal Baths. It is sold separately from the other two parts of the set.

• What's inside: Teacher Discussion Guide (editable .docx + PDF, about 1,883 words, 7 pages); answer key / model answers for the teacher.
• Resource type: Phenomena-Based Lesson – Teacher Discussion Guide. Format: editable Microsoft Word file plus a ready-to-print PDF.

Classroom use: Open with the phenomenon slide show, let students record ideas on the response sheet, and lead the discussion with the teacher guide. Built for Chemistry II, grades 9–12.

Sample question“Why does temperature alter the color of a sealed gas mixture back and forth indefinitely without adding or removing any atoms?”

Complete the set: Introduction to Chemical Equilibrium Phenomena-Based Lesson: Reversible Chromatic Shift of Nitrogen Dioxide Gas in Submerged Thermal Baths Presentation; Introduction to Chemical Equilibrium Phenomena-Based Lesson: Reversible Chromatic Shift of Nitrogen Dioxide Gas in Submerged Thermal Baths Student Response Sheet. Scaffolded version: Introduction to Chemical Equilibrium Scaffolded Phenomena-Based Lesson: Reversible Chromatic Shift of Nitrogen Dioxide Gas in Submerged Thermal Baths Teacher Discussion Guide.