University of Minnesota — CHEM 1061 Chemical
Principles I — Final Exam
150+ Practice Questions with Answers & Rationales
COURSE TOPICS COVERED
Based on the CLUE curriculum and course syllabi,
CHEM 1061 covers:
Topic Description
Atoms, Ions & Atomic structure, subatomic particles,
Isotopes isotopes, atomic mass
Mole calculations, empirical/molecular
Stoichiometry
formulas, limiting reactants, percent yield
Early atomic theory, quantum numbers,
Quantum Theory
electron configurations
Electronegativity, ionization energy,
Periodic Trends
atomic/ionic radius
,Topic Description
Ionic and covalent bonds, Lewis structure
Chemical Bonding
resonance
Molecular geometry, bond angles, dipole
VSEPR & Polarity
moments
Valence Bond
Hybridization (sp, sp², sp³)
Theory
Intermolecular London dispersion, dipole-dipole,
Forces hydrogen bonding
Gas laws, ideal gas equation, partial
Gases
pressures, diffusion/effusion
Enthalpy, Hess's Law, calorimetry,
Thermochemistry
thermodynamics
Equilibrium constants, Le Châtelier's
Equilibrium
principle
,Topic Description
pH, pOH, strong/weak acids and bases,
Acids & Bases
buffers, titrations
Solubility &
Molarity, dilutions, colligative properties
Solutions
Organic Chemistry Functional groups, hydrocarbons, polyme
PART I: ATOMS, IONS & ISOTOPES (Questions 1-25)
1. What is the mass number of an atom with 15
protons and 17 neutrons?
• A) 15
• B) 17
• C) 32
• D) 30
• E) 31
, Answer: C
Rationale: Mass number = number of protons +
number of neutrons = 15 + 17 = 32.
2. How many protons, neutrons, and electrons are in
an atom of ⁶⁵Cu?
• A) 29 protons, 36 neutrons, 29 electrons
• B) 29 protons, 65 neutrons, 29 electrons
• C) 36 protons, 29 neutrons, 36 electrons
• D) 65 protons, 29 neutrons, 65 electrons
• E) 29 protons, 36 neutrons, 36 electrons
Answer: A
Rationale: Copper (Cu) has atomic number 29 → 29
protons. Mass number 65 → neutrons = 65 − 29 = 36.
In a neutral atom, electrons = protons = 29.
3. Which of the following pairs are isotopes of the
same element?
Principles I — Final Exam
150+ Practice Questions with Answers & Rationales
COURSE TOPICS COVERED
Based on the CLUE curriculum and course syllabi,
CHEM 1061 covers:
Topic Description
Atoms, Ions & Atomic structure, subatomic particles,
Isotopes isotopes, atomic mass
Mole calculations, empirical/molecular
Stoichiometry
formulas, limiting reactants, percent yield
Early atomic theory, quantum numbers,
Quantum Theory
electron configurations
Electronegativity, ionization energy,
Periodic Trends
atomic/ionic radius
,Topic Description
Ionic and covalent bonds, Lewis structure
Chemical Bonding
resonance
Molecular geometry, bond angles, dipole
VSEPR & Polarity
moments
Valence Bond
Hybridization (sp, sp², sp³)
Theory
Intermolecular London dispersion, dipole-dipole,
Forces hydrogen bonding
Gas laws, ideal gas equation, partial
Gases
pressures, diffusion/effusion
Enthalpy, Hess's Law, calorimetry,
Thermochemistry
thermodynamics
Equilibrium constants, Le Châtelier's
Equilibrium
principle
,Topic Description
pH, pOH, strong/weak acids and bases,
Acids & Bases
buffers, titrations
Solubility &
Molarity, dilutions, colligative properties
Solutions
Organic Chemistry Functional groups, hydrocarbons, polyme
PART I: ATOMS, IONS & ISOTOPES (Questions 1-25)
1. What is the mass number of an atom with 15
protons and 17 neutrons?
• A) 15
• B) 17
• C) 32
• D) 30
• E) 31
, Answer: C
Rationale: Mass number = number of protons +
number of neutrons = 15 + 17 = 32.
2. How many protons, neutrons, and electrons are in
an atom of ⁶⁵Cu?
• A) 29 protons, 36 neutrons, 29 electrons
• B) 29 protons, 65 neutrons, 29 electrons
• C) 36 protons, 29 neutrons, 36 electrons
• D) 65 protons, 29 neutrons, 65 electrons
• E) 29 protons, 36 neutrons, 36 electrons
Answer: A
Rationale: Copper (Cu) has atomic number 29 → 29
protons. Mass number 65 → neutrons = 65 − 29 = 36.
In a neutral atom, electrons = protons = 29.
3. Which of the following pairs are isotopes of the
same element?
