Chemistry Preassessment | 80+ Exam Questions on Atomic Theory, Periodic Table, Bonding, and Reactions | Western Governors University

This document includes over 80 fully answered multiple-choice questions designed to support students preparing for the Chemistry Preassessment course at Western Governors University (WGU) for the 2025/2026 academic year. It serves as a complete and reliable study guide, specifically structured to reflect the content and question styles typically found on WGU’s competency-based chemistry assessments. Topics thoroughly covered include foundational atomic theory (structure, charge, subatomic particles), modern electron theory, atomic models (Bohr, Thomson, Rutherford), isotopes, moles and Avogadro’s number, electron configuration, periodic table organization and trends, chemical bonding (ionic, covalent, and metallic), naming and formula writing, chemical reactions (types, balancing, stoichiometry), conservation of mass, redox, energy in reactions (endothermic/exothermic), and basic organic chemistry. This preassessment review is ideal for: WGU students taking their initial chemistry competency test Students in general chemistry, high school chemistry, or introductory college-level chemistry Candidates preparing for teaching licensure exams or science placement tests Learners needing a solid conceptual and terminology review before formal instruction or lab-based coursework Each question comes with a verified correct answer, making this a strong resource for practice, revision, or rapid review before taking the exam. Keywords: Chemistry Preassessment, atomic structure, periodic table, subatomic particles, electron configuration, isotopes, Avogadro's number, mole conversions, chemical bonding, covalent bonds, ionic bonds, metallic bonds, naming compounds, chemical formulas, chemical reactions, balancing equations, stoichiometry, redox reactions, endothermic, exothermic, organic chemistry, energy in reactions, WGU chemistry