First Trimester
IN THIS LESSON
Video content, worksheets, practice problems and more
Lewis Acids
We begin by defining Lewis acids as electron pair acceptors, contrasting them with Brønsted-Lowry acids. Examples such as metal cations and electron-deficient molecules illustrate Lewis acid behavior. Students learn to identify Lewis acids in chemical reactions and understand their role in complexation and catalysis.
Newman Projections
Next, students delve into Newman projections, a powerful tool for visualizing molecular conformations around carbon-carbon bonds. Emphasis is placed on drawing and interpreting Newman projections, distinguishing between staggered and eclipsed conformations. Examples include ethane and propane to illustrate torsional strain and stability preferences.
Acidity Trends
The lesson transitions to acidity trends in organic molecules. Students explore factors influencing acidity, including electronegativity, resonance stabilization, and inductive effects. Through comparative analysis of acidic compounds, such as alcohols, phenols, and carboxylic acids, students discern trends in acidity strength and apply these concepts to predict acid-base reactions.
Integration of Concepts
We integrate Lewis acids, Newman projections, and acidity trends to analyze complex molecular structures. Students explore how Newman projections can predict stable conformations and how acidity trends influence chemical reactivity, linking structural analysis with functional properties.
Summary and Conclusion
In summary, Lesson 8 reinforces the understanding of Lewis acids, Newman projections, and acidity trends as essential tools in organic chemistry. A preview of the next lesson on reaction mechanisms and organic synthesis is provided, highlighting the practical applications of these concepts. Practice problems and exercises are assigned to solidify understanding and prepare students for applying these principles in more advanced contexts.
This lesson aims to deepen students' comprehension of molecular structure, reactivity, and functional group behavior, laying the groundwork for advanced studies in organic chemistry.
