AP Chemistry Section I Multiple Choice Sample 2023
Want to know whether you can actually predict exam scores on the real AP Chemistry MCQ just by nailing atomic structure and bonding questions? This sample paper tests the hard-foundation topics that unlock success across the entire exam: atomic structure and periodic trends, the difference between ionic and covalent bonding (and why it matters), and how intermolecular forces control physical properties. You'll work through 15 questions spanning atomic model interpretation, compound classification, and polarity-to-property logic—the exact reasoning chain examiners reward. Perfect for Grade 12 AP Chemistry students who want to benchmark their conceptual foundations before tackling kinetics and equilibrium. By the end, you'll spot the trap answers that catch 60% of test-takers and understand why bond type determines everything about a substance.
Questions in this quiz
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- Question 1
Which of the following elements would be expected to have the lowest first ionization energy?
- Question 2
The electron configuration of a neutral atom ends in 3p⁵. Which of the following correctly identifies this element?
- Question 3
Which pair of elements would form an ionic compound?
- Question 4
The Lewis structure of carbon dioxide (CO₂) shows that the carbon atom has _____ bonding pairs and _____ lone pairs.
- Question 5
Which of the following molecules is polar?
- Question 6
True or False: Hydrogen bonding occurs between a hydrogen atom covalently bonded to nitrogen, oxygen, or fluorine and a lone pair on another molecule.
- Question 7
Which of the following lists the species in order of increasing electronegativity?
- Question 8
A neutral atom of element X has 18 electrons. When X forms a 2+ cation, how many electrons does the cation have?
- Question 9
Which of the following compounds contains both ionic and covalent bonds?
- Question 10
Which substance would be expected to have the highest boiling point?
- Question 11
The element with an atomic number of 15 has how many valence electrons?
- Question 12
True or False: In a covalent bond, electrons are transferred from one atom to another.
- Question 13
Which of the following substances is held together primarily by London dispersion forces?
- Question 14
The first three ionization energies of element X are 1086 kJ/mol, 2353 kJ/mol, and 4621 kJ/mol. What is the most likely identity of element X?