100+ Free OSAT Chemistry Practice Questions

Structure and Properties of Matter

Atomic structure, electron transitions, spectra, wave-particle duality, physical and chemical properties, periodic trends, bonding, Lewis structures, VSEPR, polarity, IUPAC nomenclature, empirical and molecular formulas, mixtures, concentration, solubility, colligative properties, intermolecular forces, solids, kinetic molecular theory, ideal gases, partial pressures, and real gases.

Chemical Reactions

Synthesis, decomposition, replacement, double-replacement, combustion, skeletal and net ionic equations, neutralization, redox, balanced equations, mole and particle relationships, stoichiometry, limiting reactants, collision theory, rate laws, reaction mechanisms, dynamic equilibrium, equilibrium constants, reaction quotients, Le Chatelier's principle, and common-ion effects.

Energy Changes

Temperature as average kinetic energy, Maxwell-Boltzmann diagrams, specific heat, thermal equilibrium, calorimetry, phase-change energy, heating curves, phase diagrams, bond energies, potential-energy and enthalpy diagrams, nuclear fission, fusion, radioactive decay, thermodynamic laws, Hess's law, entropy, enthalpy, Gibbs free energy, and spontaneity.

Constructed-Response Assignment

Analysis of a lesson plan and student work sample for a laboratory investigation related to Oklahoma Academic Standards for Science, including learning goals, safe chemical storage and disposal, safe laboratory practices, evidence-based identification of student strengths and needs, differentiated strategies, and implications for future instruction.