AP® Chemistry Study Guide
Comprehensive AP® Chemistry guide covering all nine units: Atomic Structure, Compound Structure, Properties of Substances and Mixtures, Chemical Reactions, Kinetics, Thermochemistry, Equilibrium, Acids and Bases, and Thermodynamics and Electrochemistry. Includes the equation/constants sheet, lab procedures, and the six science practices threaded through every topic.
The Prep Den AP® Chemistry study guide is your complete companion for revising the course: full topic-by-topic coverage, interactive flashcards, practice quizzes with worked explanations, a key-terms bank, and exam-technique tips. Use it as your main study guide or as a supplement to your textbook and class notes.
Topics Covered
What you get
Unit 1: Atomic Structure & Properties
THE BIG PICTURE. Unit 1 establishes the quantitative and structural foundation for everything that follows. It is worth 7–9% of the exam but is referenced by every other unit. Two threads dominate: the mole concept (how chemists count atoms) and atomic structure (how electron arrangement determines reactivity). Master Avogadro's number, dimensional analysis, electron configuration, photoelectron spectroscopy (PES), and the periodic trends, and you have the toolkit to predict bonding (Unit 2), properties (Unit 3), and reaction behavior (Unit 4 onward).
Sample Flashcards
How many atoms are in 36.5 g of carbon?
Moles of C = mol. Atoms = atoms. The mole bridge: grams → moles via molar mass, moles → particles via .
Why is Cr (Z = 24) an exception to the simple Aufbau prediction, and what is its observed configuration?
Predicted by simple Aufbau: [Ar] . Observed: [Ar] . A half-filled is extra stable (each orbital singly occupied, all parallel spins by Hund), so promoting one electron to lowers total energy. Cu shows the analogous filled- exception: [Ar] .
Sample Key Terms
Mole
A counting unit equal to Avogadro's number entities. Bridges the macroscopic (grams) and atomic (particles) scales.
Molar Mass ()
Mass of one mole of a substance, in g/mol, numerically equal to the atomic or formula weight in amu. Use to convert between mass and moles: .
Mass Spectrum
A plot of relative isotope abundance versus mass-to-charge ratio. The weighted-average peak position gives the average atomic mass: .
What's Covered
- Unit 1: Atomic Structure & Properties
- Unit 2: Compound Structure & Properties
- Unit 3: Properties of Substances & Mixtures
- Unit 4: Chemical Reactions
- Unit 5: Kinetics
- Unit 6: Thermochemistry
- Unit 7: Equilibrium
- Unit 8: Acids & Bases
- Unit 9: Thermodynamics & Electrochemistry
- Exam Strategy, Science Practices & Lab Skills
10 topics · 120+ flashcards · quizzes included
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