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Portage Learning CHEM 103 – General Chemistry I Final Exam Questions and Answers 2026

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This document contains comprehensive Portage Learning CHEM 103 – General Chemistry I Final Exam practice questions with correct answers and detailed rationales, designed to help students prepare confidently for the 2026 examination. It covers fundamental chemistry concepts, including atomic structure, chemical bonding, periodic trends, stoichiometry, chemical reactions, gases, solutions, acids and bases, thermochemistry, equilibrium, and introductory laboratory calculations. The practice questions are organized to reflect the style and level of difficulty typically encountered in the CHEM 103 Final Exam, making this resource ideal for self-study, course review, and final exam preparation. Each answer includes a clear rationale to reinforce core chemistry principles, strengthen problem-solving skills, and build confidence in applying fundamental concepts to exam-style questions.

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Portage Learning CHEM 103
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Portage Learning CHEM 103

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Portage Learning CHEM 103 General Chemistry I | Comprehensive Final Exam Study Guide & Verified Answers (2026 Edition)

,Portage Learning CHEM 103 –
General Chemistry I Final Exam
Questions and Answers 2026

Part I – Atomic Structure & Periodic Trends
1. Which subatomic particle determines the identity of an element?
A. Electron
B. Neutron
C. Proton
D. Positron
2. An atom with 17 protons is:
A. Sodium
B. Chlorine
C. Argon
D. Potassium
3. Isotopes of the same element differ in their:
A. Number of protons
B. Number of neutrons
C. Atomic number
D. Electron charge
4. Which has the highest electronegativity?
A. Na
B. O
C. Cl
D. F

,5. Atomic radius generally:
A. Increases across a period
B. Decreases across a period
C. Never changes
D. Depends only on mass
Part II – Chemical Bonding
6. Ionic bonds form through:
A. Electron sharing
B. Electron transfer
C. Hydrogen bonding
D. Nuclear attraction
7. Which compound is primarily covalent?
A. NaCl
B. MgO
C. CO₂
D. CaF₂
8. Water is:
A. Nonpolar
B. Polar
C. Ionic
D. Metallic
9. Which intermolecular force is strongest?
A. London dispersion
B. Dipole-dipole
C. Hydrogen bonding
D. Ion-induced dipole
10. Carbon usually forms:
A. One bond
B. Two bonds
C. Three bonds
D. Four bonds
Part III – Chemical Reactions & Stoichiometry
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