CHEM 20B: Chemical Energetics and Change
Enforced corequisite: Mathematics
This archive catalogs 12 free educational resources and past exams for CHEM 20B (Chemical Energetics and Change) at University of California Los Angeles (UCLA), containing 4 midterm papers, 5 final examinations, 2 quizzes, and 1 worksheet. Dated documents represent 5 distinct academic years between 2019 and 2024.
Core Exam Topics & Learning Objectives
- Atomic structure and periodic trends: electron configurations, orbital diagrams, ionization energy, and electronegativity in CHEM 20B
- Chemical bonding and molecular geometry: VSEPR theory, molecular polarity, intermolecular forces, and Lewis structures
- Stoichiometry and reaction equilibria: limiting reactants, percent yield, molarity, and solution stoichiometry
- Thermodynamics and equilibrium: enthalpy, entropy, Gibbs free energy, reaction quotients, Le Chatelier's principle, and acid-base pH in Chemical Energetics and Change
Study Resource for Chemical Energetics and Change
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Midterm (Exam 1) 2019
University of California Los Angeles (UCLA) CHEM 20B Midterm (Exam 1) 2019
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Final Exam 2019
University of California Los Angeles (UCLA) CHEM 20B Final Exam 2019
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Final Exam 2020
University of California Los Angeles (UCLA) CHEM 20B Final Exam 2020
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Midterm (Exam 1) 2021
University of California Los Angeles (UCLA) CHEM 20B Midterm (Exam 1) 2021
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Final Exam 2021
University of California Los Angeles (UCLA) CHEM 20B Final Exam 2021
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Midterm (Exam 1) 2022
University of California Los Angeles (UCLA) CHEM 20B Midterm (Exam 1) 2022
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Final Exam 2022
University of California Los Angeles (UCLA) CHEM 20B Final Exam 2022
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Midterm (Exam 1) 2024
University of California Los Angeles (UCLA) CHEM 20B Midterm (Exam 1) 2024
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Final Exam 2024
University of California Los Angeles (UCLA) CHEM 20B Final Exam 2024
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Quiz 1
University of California Los Angeles (UCLA) CHEM 20B Quiz 1
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Quiz 2
University of California Los Angeles (UCLA) CHEM 20B Quiz 2
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Worksheet 2
University of California Los Angeles (UCLA) CHEM 20B Worksheet 2
Assessment Inventory for CHEM 20B (12 Documents)
| Document | Format | Year | Access |
|---|---|---|---|
| Midterm (Exam 1) 2024 | Midterm | 2024 | Illustrative Archive |
| Final Exam 2024 | Final | 2024 | Illustrative Archive |
| Midterm (Exam 1) 2022 | Midterm | 2022 | Illustrative Archive |
| Final Exam 2022 | Final | 2022 | Illustrative Archive |
| Midterm (Exam 1) 2021 | Midterm | 2021 | Illustrative Archive |
| Final Exam 2021 | Final | 2021 | Illustrative Archive |
| Final Exam 2020 | Final | 2020 | Illustrative Archive |
| Midterm (Exam 1) 2019 | Midterm | 2019 | Illustrative Archive |
| Final Exam 2019 | Final | 2019 | Illustrative Archive |
| Quiz 1 | Quiz | — | Illustrative Archive |
| Quiz 2 | Quiz | — | Illustrative Archive |
| Worksheet 2 | Worksheet | — | Illustrative Archive |
| Complete inventory of all 12 assessments (sorted by most recent). Select any document to inspect or use the search bar above to filter. | |||
Frequently Asked Questions
Which assessment formats are cataloged in this CHEM 20B archive?
This collection for CHEM 20B at University of California Los Angeles (UCLA) catalogs 12 total resources across the following formats: Midterms, Finals, Quizzes, Worksheets. Each document is listed in the assessment inventory table below with its individual format tag and academic year where recorded.
What academic years are covered in this CHEM 20B collection?
Dated materials in this archive span from 2019 to 2024, representing 5 distinct academic years. Coverage varies by the records currently cataloged for this course.
How can students access these free CHEM 20B past exams?
All cataloged CHEM 20B past exams and study materials are free to request. The catalog, metadata, assessment inventory, and illustrative thumbnails are public; source documents are not shown on this page. Use the connect options to request a study resource, and confirm current course topics and grading policies with the University of California Los Angeles (UCLA) course syllabus.