CHEM 20A practice exams

Chemical Structure · University of California, Los Angeles

Make a free, printable CHEM 20A practice exam: choose the topics, the length and the difficulty above, and get an exam-style PDF with a full answer key. Each paper draws on 400 original questions and skips the ones you have already seen.

Topics covered

• Light, Spectroscopy and the Quantum Atom · 100 questions
• Electron Configurations and Periodic Trends · 100 questions
• Lewis Structures, VSEPR and Polarity · 100 questions
• Hybridization and Molecular Orbitals · 100 questions

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