Q3 From Atoms to Molecules (File Upload)17 Points
We spent the first part of the term exploring the evolution of the atomic model. [Recall that a scientific model is “a physical and/or mathematical and/or conceptual representation of a system of ideas, events, or processes.”] The attached infographic nicely summarizes each of the models [see below, and full image on Canvas], their experimental underpinnings, their strengths and their shortcomings. These developments in science are what the philosopher Thomas Khun described as revolutionary (or ‘extraordinary’) science, which is underpinned by major paradoxes and paradigm shifts.
Use the atom infographic as an example to follow, and on a page draw by hand an infographic of bonding theories, from Lewis to Valence Bond and Molecular Orbital Theory. Use two different diatomic molecules (such as N_2N2, O_2O2, or F_2F2) to illustrate how the models provide an increasing level of detail and complexity as they are applied to your examples. ie. You should show how the bonding description changes from Lewis to Valence Bond to Molecular Orbital theories. What are the benefits and shortcomings of each model?
Here is your Infographic checklist:
General description of bonding;
Brief description of each bonding theory;
For each bonding theory:
• 2 fully developed bonding examples (*with appropriate labels and other descriptions)
• Benefits of the bonding theory
• Shortcomings of the bonding theory
Please reference all resources that you used in developing your infographic.
Grading: 2 pt for general description of bonding; 5 pts for each Model (description, two examples, benefits and shortcomings/challenges)
Q4 Chemistry in Context – Your Life3 Points
Throughout the quarter we’ve investigated chemical phenomenon from four perspectives – symbolic, particulate-level, macroscopic and the human dimension.
How has what you learned in CHEM 6A been relevant to YOU? Pick one major concept from the quarter and briefly describe how you might encounter/use this knowledge in your anticipated major and/or career. Limit your response to 3-5 sentences.
Grading: 1 pt for description of concept, 2 points for establishing connections to your major and/or career.
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