CHEM 103 / CHEM103 Final Exam General Chemistry I with
Lab Actual Exam 2026/2027 | Complete Exam-Style
Questions | 100% Verified – Detailed Rationales – Pass
Guaranteed – A+ Graded
I've found relevant practice questions from a **CHEM 103 Final Exam** for General Chemistry I that
covers topics like atomic structure, chemical bonding, stoichiometry, and gas laws . Here are **40
questions** with answers and rationales based on that material and other supporting sources .
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## Questions 1-40
**CHEM 103 / CHEM103 Final Exam (Latest 2025/2026 Update)**
*General Chemistry I with Lab | Questions & Answers PLUS RATIONALES*
**1. What is the atomic number of an element?**
A. Number of neutrons
B. Number of protons
C. Number of electrons + neutrons
D. Atomic mass
**Answer: B. Number of protons**
*Rationale: The atomic number defines the number of protons in the nucleus and determines the
identity of an element .*
**2. Which of the following is an example of an ionic bond?**
A. H₂O
B. CO₂
C. NaCl
D. CH₄
**Answer: C. NaCl**
, *Rationale: Ionic bonds form between metals and nonmetals via electron transfer. NaCl consists of Na⁺
and Cl⁻ ions held together by electrostatic attraction .*
**3. What is the molar mass of H₂O?**
A. 16 g/mol
B. 18 g/mol
C. 20 g/mol
D. 22 g/mol
**Answer: B. 18 g/mol**
*Rationale: 2(1.008) + 16.00 = 18.016 ≈ 18 g/mol .*
**4. Which law states that matter cannot be created or destroyed?**
A. Boyle's Law
B. Charles' Law
C. Law of Conservation of Mass
D. Avogadro's Law
**Answer: C. Law of Conservation of Mass**
*Rationale: Mass remains constant in chemical reactions; it is neither created nor destroyed .*
**5. What is the pH of a neutral solution?**
A. 0
B. 5
C. 7
D. 14
**Answer: C. 7**
*Rationale: Neutral solutions have equal concentrations of H⁺ and OH⁻ ions, corresponding to pH 7 at
25°C .*
**6. Which particle has a negative charge?**
Lab Actual Exam 2026/2027 | Complete Exam-Style
Questions | 100% Verified – Detailed Rationales – Pass
Guaranteed – A+ Graded
I've found relevant practice questions from a **CHEM 103 Final Exam** for General Chemistry I that
covers topics like atomic structure, chemical bonding, stoichiometry, and gas laws . Here are **40
questions** with answers and rationales based on that material and other supporting sources .
---
## Questions 1-40
**CHEM 103 / CHEM103 Final Exam (Latest 2025/2026 Update)**
*General Chemistry I with Lab | Questions & Answers PLUS RATIONALES*
**1. What is the atomic number of an element?**
A. Number of neutrons
B. Number of protons
C. Number of electrons + neutrons
D. Atomic mass
**Answer: B. Number of protons**
*Rationale: The atomic number defines the number of protons in the nucleus and determines the
identity of an element .*
**2. Which of the following is an example of an ionic bond?**
A. H₂O
B. CO₂
C. NaCl
D. CH₄
**Answer: C. NaCl**
, *Rationale: Ionic bonds form between metals and nonmetals via electron transfer. NaCl consists of Na⁺
and Cl⁻ ions held together by electrostatic attraction .*
**3. What is the molar mass of H₂O?**
A. 16 g/mol
B. 18 g/mol
C. 20 g/mol
D. 22 g/mol
**Answer: B. 18 g/mol**
*Rationale: 2(1.008) + 16.00 = 18.016 ≈ 18 g/mol .*
**4. Which law states that matter cannot be created or destroyed?**
A. Boyle's Law
B. Charles' Law
C. Law of Conservation of Mass
D. Avogadro's Law
**Answer: C. Law of Conservation of Mass**
*Rationale: Mass remains constant in chemical reactions; it is neither created nor destroyed .*
**5. What is the pH of a neutral solution?**
A. 0
B. 5
C. 7
D. 14
**Answer: C. 7**
*Rationale: Neutral solutions have equal concentrations of H⁺ and OH⁻ ions, corresponding to pH 7 at
25°C .*
**6. Which particle has a negative charge?**
