Stoichiometry & Mole Ratios Scaffolded Phenomena-Based Lesson: Explosive 30-Millisecond Inflation of Automotive Airbags by Sodium Azide Gas Generation Presentation | Chemistry II | Grades 9–12

This is the student-facing slide presentation that introduces the phenomenon, walks the class through observations and driving questions, and frames the evidence students will use for the Scaffolded Phenomena-Based Lesson in the Chemistry II (grades 9–12) chapter Stoichiometry & Mole Ratios, built around the phenomenon Explosive 30-Millisecond Inflation of Automotive Airbags by Sodium Azide Gas Generation. This scaffolded version adds sentence frames and extra supports for students who need them. It is sold separately from the other two parts of the set.

Complete the set: Stoichiometry & Mole Ratios Scaffolded Phenomena-Based Lesson: Explosive 30-Millisecond Inflation of Automotive Airbags by Sodium Azide Gas Generation Teacher Discussion Guide; Stoichiometry & Mole Ratios Scaffolded Phenomena-Based Lesson: Explosive 30-Millisecond Inflation of Automotive Airbags by Sodium Azide Gas Generation Student Response Sheet. Original version: Stoichiometry & Mole Ratios Phenomena-Based Lesson: Explosive 30-Millisecond Inflation of Automotive Airbags by Sodium Azide Gas Generation Presentation.

Sections: Section 1: Three-dimensional Learning Alignment (ngss); NGSS Dimension; Scaffolded Three-dimensional Learning Goal; Section 3: Scaffolded Science Talk Moves Matrix; Scaffolded Talk Move; Verbatim Facilitation Prompt & Talk Goal; Everyday Student Misconception (flawed Claim); Scientific Evidence & Intuitive Correction. Sample item: “The balanced reaction 2 NaN3 → 2 Na + 3 N2 shows that 2 moles of reactant produce ____________ moles of gas.”

What's inside: SCAFFOLDED Student Slide Show (editable .pptx + PDF, 16 slides).

Standards: NGSS High School Physical Science (HS-PS) disciplinary core ideas and the science practices of analyzing data and constructing explanations.

Resource type: Phenomena-Based Lesson – Presentation. Format: editable Microsoft PowerPoint 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.

Format note: These files are delivered in Microsoft Office formats (Word and/or PowerPoint). If you open a worksheet that includes tables in Apple Pages or another non-Microsoft app, table formatting may not display correctly. For best results, use Microsoft Word or PowerPoint (or upload the file to Google Docs). If you run into any formatting issues, contact us and we can send a PDF version.