NORTH CAROLINA CHEMISTRY TEACHER EXAM – PRACTICE QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
Scientific Inquiry and Laboratory Safety
Atomic Structure and Periodicity
Chemical Bonding and Molecular Geometry
Chemical Reactions and Stoichiometry
Thermodynamics and Kinetics
Chemical Equilibrium and Acid-Base Chemistry
Organic and Nuclear Chemistry
Solutions and Solubility
INTRODUCTION
The North Carolina Chemistry Teacher Exam Practice Assessment is designed to
evaluate the comprehensive pedagogical and content knowledge required for
secondary chemistry educators. This exam assesses mastery of foundational
chemical theories, laboratory safety protocols, and the ability to apply complex
,scientific principles to real-world instructional scenarios. The assessment consists of
200 multiple-choice questions that require candidates to demonstrate critical thinking,
ethical decision-making, and regulatory compliance within a classroom and laboratory
setting. By emphasizing both theoretical proficiency and practical application, this
document ensures that educators are prepared to foster a safe and rigorous learning
environment for students.
SECTION ONE: QUESTIONS 1–100
1. Which piece of laboratory equipment is most appropriate for measuring exactly
25.00 mL of a liquid for a titration?
A. 50 mL Beaker
B. 25 mL Volumetric Pipet
C. 50 mL Graduated Cylinder
D. 100 mL Erlenmeyer Flask
🟢 B. 25 mL Volumetric Pipet
🔴 RATIONALE: Volumetric pipets are designed to deliver a single, highly precise
volume of liquid, making them the standard choice for analytical procedures like
titrations where accuracy to two decimal places is required.
, 2. A student spills a small amount of concentrated sulfuric acid on the laboratory
bench. What is the first appropriate action the teacher should take?
A. Pour water directly onto the spill to dilute it.
B. Neutralize the spill with a strong base like NaOH.
C. Apply sodium bicarbonate to neutralize the acid.
D. Wipe it up immediately with paper towels.
🟢 C. Apply sodium bicarbonate to neutralize the acid.
🔴 RATIONALE: Weak bases like sodium bicarbonate (baking soda) safely
neutralize acid spills without the extreme heat generation associated with strong
bases. Water can cause splashing through an exothermic reaction.
3. According to the Bohr model of the atom, what happens when an electron
moves from a higher energy level to a lower energy level?
A. A photon is absorbed.
B. The atom becomes an isotope.
C. A photon is emitted.
D. The nuclear charge increases.
🟢 C. A photon is emitted.
, 🔴 RATIONALE: As an electron drops to a lower energy state, the energy difference
is released in the form of electromagnetic radiation (a photon), which corresponds to
specific spectral lines.
4. Which of the following elements has the highest first ionization energy?
A. Sodium
B. Aluminum
C. Chlorine
D. Argon
🟢 D. Argon
🔴 RATIONALE: Ionization energy increases across a period from left to right due to
increased effective nuclear charge. Noble gases have the highest values in their
respective periods due to their stable octet.
5. What is the correct molecular geometry for a molecule of sulfur hexafluoride
(SF6)?
A. Tetrahedral
B. Octahedral
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
Scientific Inquiry and Laboratory Safety
Atomic Structure and Periodicity
Chemical Bonding and Molecular Geometry
Chemical Reactions and Stoichiometry
Thermodynamics and Kinetics
Chemical Equilibrium and Acid-Base Chemistry
Organic and Nuclear Chemistry
Solutions and Solubility
INTRODUCTION
The North Carolina Chemistry Teacher Exam Practice Assessment is designed to
evaluate the comprehensive pedagogical and content knowledge required for
secondary chemistry educators. This exam assesses mastery of foundational
chemical theories, laboratory safety protocols, and the ability to apply complex
,scientific principles to real-world instructional scenarios. The assessment consists of
200 multiple-choice questions that require candidates to demonstrate critical thinking,
ethical decision-making, and regulatory compliance within a classroom and laboratory
setting. By emphasizing both theoretical proficiency and practical application, this
document ensures that educators are prepared to foster a safe and rigorous learning
environment for students.
SECTION ONE: QUESTIONS 1–100
1. Which piece of laboratory equipment is most appropriate for measuring exactly
25.00 mL of a liquid for a titration?
A. 50 mL Beaker
B. 25 mL Volumetric Pipet
C. 50 mL Graduated Cylinder
D. 100 mL Erlenmeyer Flask
🟢 B. 25 mL Volumetric Pipet
🔴 RATIONALE: Volumetric pipets are designed to deliver a single, highly precise
volume of liquid, making them the standard choice for analytical procedures like
titrations where accuracy to two decimal places is required.
, 2. A student spills a small amount of concentrated sulfuric acid on the laboratory
bench. What is the first appropriate action the teacher should take?
A. Pour water directly onto the spill to dilute it.
B. Neutralize the spill with a strong base like NaOH.
C. Apply sodium bicarbonate to neutralize the acid.
D. Wipe it up immediately with paper towels.
🟢 C. Apply sodium bicarbonate to neutralize the acid.
🔴 RATIONALE: Weak bases like sodium bicarbonate (baking soda) safely
neutralize acid spills without the extreme heat generation associated with strong
bases. Water can cause splashing through an exothermic reaction.
3. According to the Bohr model of the atom, what happens when an electron
moves from a higher energy level to a lower energy level?
A. A photon is absorbed.
B. The atom becomes an isotope.
C. A photon is emitted.
D. The nuclear charge increases.
🟢 C. A photon is emitted.
, 🔴 RATIONALE: As an electron drops to a lower energy state, the energy difference
is released in the form of electromagnetic radiation (a photon), which corresponds to
specific spectral lines.
4. Which of the following elements has the highest first ionization energy?
A. Sodium
B. Aluminum
C. Chlorine
D. Argon
🟢 D. Argon
🔴 RATIONALE: Ionization energy increases across a period from left to right due to
increased effective nuclear charge. Noble gases have the highest values in their
respective periods due to their stable octet.
5. What is the correct molecular geometry for a molecule of sulfur hexafluoride
(SF6)?
A. Tetrahedral
B. Octahedral
