⁂ Science · AP Exam

Chemistry Study Library.

Expert-authored worked FRQ solutions, original practice questions, and unit study guides — built from official College Board sources and original Tian2 content.

9 units standard tracks 195 minutes

Total Time 195 minutes

MCQ 60 multiple-choice questions

FRQ 7 free-response questions

Score Scale 1-5 77.9% scored 3+

Curriculum

Study by unit.

Atomic Structure and Properties

Moles and molar mass · Mass spectra of elements · Elemental composition of pure substances · Atomic structure and electron configuration · Photoelectron spectroscopy (PES) · Periodic trends · Valence electrons and ionic compounds

standard track

7–9% of exam

0 lessons ›

Compound Structure and Properties

Chemical bonds · Intramolecular forces · Ionic solids · Metallic structures · Lewis diagrams · Resonance structures · VSEPR theory · Bond hybridization (sp, sp2, sp3)

standard track

7–9% of exam

0 lessons ›

Properties of Substances and Mixtures

Intermolecular and interparticle forces (IMFs) · Solids, liquids, and gases · Ideal gas law and kinetic molecular theory (KMT) · Solutions and mixtures · Solubility · Spectroscopy · Photon energy · Beer-Lambert Law

Physical and chemical changes · Net ionic equations · Stoichiometry and titration · Types of reactions (acid-base, redox, precipitation) · Conservation of mass

Reaction rates · Rate law and rate constant · Integrated rate laws · Half-life · Elementary reactions · Collision model · Activation energy and Arrhenius equation · Reaction mechanisms · Catalysis

Endothermic and exothermic processes · Energy diagrams · Heat transfer and calorimetry · Phase changes · Enthalpy · Bond enthalpies · Hess's Law · Standard enthalpy of formation

Reversible reactions · Reaction quotient (Q) · Equilibrium constant (K) · Le Chatelier's principle · Solubility equilibria (Ksp) · Common-ion effect · pH and solubility · Free energy of dissolution

pH and pOH calculations · Strong acids and bases · Weak acid and base equilibria (Ka, Kb) · Buffers · Henderson-Hasselbalch equation · Acid-base titrations · Buffer capacity

standard track

11–15% of exam

0 lessons ›

Thermodynamics and Electrochemistry

Entropy and dispersal · Gibbs free energy · Thermodynamic favorability · Galvanic (voltaic) cells · Cell potential and standard reduction potentials · Electrolysis · Faraday's Law

standard track

7–9% of exam

0 lessons ›

Our worked solutions and practice questions are original instructional content created by Tian2 AP. They are aligned to the concepts and skills described in College Board’s Course and Exam Description and are not reproductions of, or affiliated with, College Board’s official materials.