CHEM 103 INTRODUCTION TO GENERAL CHEMISTRY MODULES
1–6 EXAMINATION, PORTAGE LEARNING - (30 QUESTIONS) UP-
TO-DATE ACTUAL EXAM QUESTIONS AND 100% ACCURATE
SOLUTIONS | VERIFIED ANSWERS - INSTANT PDF DOWNLOAD
Candidate Name: ____________________________
Candidate ID: _______________________________
Date: ______________________________________
Examination Location: _______________________
Time Allowed: 120 Minutes
Total Questions: 30
Instructions:
• Answer all questions.
• Select the most appropriate answer for each question.
• Calculators are permitted unless otherwise specified.
• Show all necessary calculations clearly for full comprehension.
• Each question carries equal marks.
Core Competency Areas Assessed:
• Atomic Structure and Periodicity
• Chemical Bonding and Molecular Geometry
• Stoichiometry and Chemical Reactions
• States of Matter and Gas Laws
• Thermochemistry
• Solutions and Concentration
This examination evaluates foundational knowledge in general chemistry,
emphasizing problem-solving, conceptual reasoning, and application of
chemical principles. The assessment reflects the structure and rigor of
Portage Learning CHEM 103 Modules 1–6, ensuring students demonstrate
competency in quantitative and theoretical chemistry concepts. Students are
expected to integrate knowledge across modules and apply it to real-world and
laboratory-based scenarios.
,This is an original simulated examination created for educational purposes. It
is not affiliated with or endorsed by Portage Learning.
QUESTIONS
Q1. A sample of magnesium reacts completely with hydrochloric acid
producing hydrogen gas. If 0.50 mol Mg is used, how many liters of H₂ are
produced at STP?
A. 5.6 L
B. 11.2 L
C. 22.4 L
D. 44.8 L
Correct Answer: B. 11.2 L
Explanation: Mg reacts 1:1 with H₂. Thus, 0.50 mol Mg produces 0.50 mol
H₂. At STP, 1 mol gas = 22.4 L, so 0.50 × 22.4 = 11.2 L. A and C miscalculate
molar conversion; D doubles the correct value.
Q2. Which quantum number set is invalid?
A. n=2, l=1, ml=0, ms=+½
B. n=3, l=2, ml=−2, ms=−½
C. n=1, l=1, ml=0, ms=+½
D. n=4, l=3, ml=+1, ms=−½
Correct Answer: C. n=1, l=1, ml=0, ms=+½
Explanation: For n=1, l must be 0. Option C violates this. Others follow
allowed quantum rules.
Q3. Which element has the highest ionization energy?
A. Sodium
B. Chlorine
C. Argon
D. Potassium
Correct Answer: C. Argon
Explanation: Noble gases have the highest ionization energy due to full
electron shells. Sodium and potassium are low; chlorine is high but less than
argon.
,Q4. What is the empirical formula of C₆H₁₂O₆?
A. CH₂O
B. C₂H₄O₂
C. C₃H₆O₃
D. CHO
Correct Answer: A. CH₂O
Explanation: Divide all subscripts by 6 → CH₂O. Others are not simplest
ratios.
Q5. A gas occupies 2.0 L at 1 atm. What volume will it occupy at 2 atm
(constant temperature)?
A. 1.0 L
B. 2.0 L
C. 4.0 L
D. 0.5 L
Correct Answer: A. 1.0 L
Explanation: Boyle’s Law: P₁V₁ = P₂V₂ → doubling pressure halves volume.
D is incorrect because it halves twice.
Q6. Which bond is most polar?
A. C–H
B. N–H
C. O–H
D. F–H
Correct Answer: D. F–H
Explanation: Fluorine has highest electronegativity → largest difference.
Others have smaller differences.
Q7. What is the molarity of 1 mole of solute in 2 L solution?
A. 0.25 M
B. 0.50 M
C. 1.0 M
D. 2.0 M
Correct Answer: B. 0.50 M
Explanation: M = mol/L = 1/2 = 0.5 M. Others misapply formula.
, Q8. Which shape corresponds to sp³ hybridization?
A. Linear
B. Trigonal planar
C. Tetrahedral
D. Octahedral
Correct Answer: C. Tetrahedral
Explanation: sp³ gives four electron domains → tetrahedral. Others
correspond to different hybridizations.
Q9. Which gas law relates temperature and volume?
A. Boyle’s Law
B. Charles’s Law
C. Avogadro’s Law
D. Dalton’s Law
Correct Answer: B. Charles’s Law
Explanation: Volume ∝ Temperature at constant pressure. Others describe
different relationships.
Q10. How many moles are in 44 g CO₂?
A. 1 mol
B. 2 mol
C. 0.5 mol
D. 44 mol
Correct Answer: A. 1 mol
Explanation: Molar mass CO₂ = 44 g/mol → 44 g = 1 mol. Others incorrect
conversions.
Q11. Which type of intermolecular force is strongest?
A. London dispersion
B. Dipole-dipole
C. Hydrogen bonding
D. Ionic bonding
Correct Answer: C. Hydrogen bonding
Explanation: Hydrogen bonding is strongest IMF. Ionic is not IMF but
bonding type.
1–6 EXAMINATION, PORTAGE LEARNING - (30 QUESTIONS) UP-
TO-DATE ACTUAL EXAM QUESTIONS AND 100% ACCURATE
SOLUTIONS | VERIFIED ANSWERS - INSTANT PDF DOWNLOAD
Candidate Name: ____________________________
Candidate ID: _______________________________
Date: ______________________________________
Examination Location: _______________________
Time Allowed: 120 Minutes
Total Questions: 30
Instructions:
• Answer all questions.
• Select the most appropriate answer for each question.
• Calculators are permitted unless otherwise specified.
• Show all necessary calculations clearly for full comprehension.
• Each question carries equal marks.
Core Competency Areas Assessed:
• Atomic Structure and Periodicity
• Chemical Bonding and Molecular Geometry
• Stoichiometry and Chemical Reactions
• States of Matter and Gas Laws
• Thermochemistry
• Solutions and Concentration
This examination evaluates foundational knowledge in general chemistry,
emphasizing problem-solving, conceptual reasoning, and application of
chemical principles. The assessment reflects the structure and rigor of
Portage Learning CHEM 103 Modules 1–6, ensuring students demonstrate
competency in quantitative and theoretical chemistry concepts. Students are
expected to integrate knowledge across modules and apply it to real-world and
laboratory-based scenarios.
,This is an original simulated examination created for educational purposes. It
is not affiliated with or endorsed by Portage Learning.
QUESTIONS
Q1. A sample of magnesium reacts completely with hydrochloric acid
producing hydrogen gas. If 0.50 mol Mg is used, how many liters of H₂ are
produced at STP?
A. 5.6 L
B. 11.2 L
C. 22.4 L
D. 44.8 L
Correct Answer: B. 11.2 L
Explanation: Mg reacts 1:1 with H₂. Thus, 0.50 mol Mg produces 0.50 mol
H₂. At STP, 1 mol gas = 22.4 L, so 0.50 × 22.4 = 11.2 L. A and C miscalculate
molar conversion; D doubles the correct value.
Q2. Which quantum number set is invalid?
A. n=2, l=1, ml=0, ms=+½
B. n=3, l=2, ml=−2, ms=−½
C. n=1, l=1, ml=0, ms=+½
D. n=4, l=3, ml=+1, ms=−½
Correct Answer: C. n=1, l=1, ml=0, ms=+½
Explanation: For n=1, l must be 0. Option C violates this. Others follow
allowed quantum rules.
Q3. Which element has the highest ionization energy?
A. Sodium
B. Chlorine
C. Argon
D. Potassium
Correct Answer: C. Argon
Explanation: Noble gases have the highest ionization energy due to full
electron shells. Sodium and potassium are low; chlorine is high but less than
argon.
,Q4. What is the empirical formula of C₆H₁₂O₆?
A. CH₂O
B. C₂H₄O₂
C. C₃H₆O₃
D. CHO
Correct Answer: A. CH₂O
Explanation: Divide all subscripts by 6 → CH₂O. Others are not simplest
ratios.
Q5. A gas occupies 2.0 L at 1 atm. What volume will it occupy at 2 atm
(constant temperature)?
A. 1.0 L
B. 2.0 L
C. 4.0 L
D. 0.5 L
Correct Answer: A. 1.0 L
Explanation: Boyle’s Law: P₁V₁ = P₂V₂ → doubling pressure halves volume.
D is incorrect because it halves twice.
Q6. Which bond is most polar?
A. C–H
B. N–H
C. O–H
D. F–H
Correct Answer: D. F–H
Explanation: Fluorine has highest electronegativity → largest difference.
Others have smaller differences.
Q7. What is the molarity of 1 mole of solute in 2 L solution?
A. 0.25 M
B. 0.50 M
C. 1.0 M
D. 2.0 M
Correct Answer: B. 0.50 M
Explanation: M = mol/L = 1/2 = 0.5 M. Others misapply formula.
, Q8. Which shape corresponds to sp³ hybridization?
A. Linear
B. Trigonal planar
C. Tetrahedral
D. Octahedral
Correct Answer: C. Tetrahedral
Explanation: sp³ gives four electron domains → tetrahedral. Others
correspond to different hybridizations.
Q9. Which gas law relates temperature and volume?
A. Boyle’s Law
B. Charles’s Law
C. Avogadro’s Law
D. Dalton’s Law
Correct Answer: B. Charles’s Law
Explanation: Volume ∝ Temperature at constant pressure. Others describe
different relationships.
Q10. How many moles are in 44 g CO₂?
A. 1 mol
B. 2 mol
C. 0.5 mol
D. 44 mol
Correct Answer: A. 1 mol
Explanation: Molar mass CO₂ = 44 g/mol → 44 g = 1 mol. Others incorrect
conversions.
Q11. Which type of intermolecular force is strongest?
A. London dispersion
B. Dipole-dipole
C. Hydrogen bonding
D. Ionic bonding
Correct Answer: C. Hydrogen bonding
Explanation: Hydrogen bonding is strongest IMF. Ionic is not IMF but
bonding type.
