OSAT Chemistry study plan

Build a one-page equation sheet covering stoichiometry, gas laws, thermochemistry, and equilibrium, writing each formula from memory before checking a reference.

Solve 30 mixed mole-concept and limiting-reactant problems, recording the error type for every miss in a log.

Set up and complete a dimensional-analysis drill converting between mass, moles, particles, and gas volume at STP.

Define the periodic trends (atomic radius, ionization energy, electronegativity, electron affinity) and predict the direction of each across a period and down a group without notes.

Draw Lewis structures, assign formal charges, and predict molecular geometry and polarity for 20 representative molecules and ions.

Apply VSEPR and hybridization to explain bond angles and shapes, writing a short justification for each prediction.

Balance 15 oxidation-reduction equations in acidic and basic solution and identify the oxidizing and reducing agents.

Classify reaction types and predict products for precipitation, acid-base, and combustion reactions, using solubility rules.

Calculate solution concentration in molarity, molality, and mass percent, and convert among them for 15 problems.

Solve colligative-property problems (boiling-point elevation, freezing-point depression, osmotic pressure) using the van't Hoff factor.

Interpret and sketch heating curves and phase diagrams, labeling regions, triple point, and critical point.

Perform dilution and titration stoichiometry calculations, including weak-acid pH at the equivalence point.

Write and balance equilibrium expressions, then solve for equilibrium concentrations using ICE tables in 12 problems.

Apply Le Chatelier's principle to predict shifts from changes in concentration, pressure, temperature, and volume.

Calculate pH, pOH, and percent ionization for strong and weak acids and bases, including buffers via Henderson-Hasselbalch.

Distinguish Arrhenius, Bronsted-Lowry, and Lewis acid-base definitions with a worked example of each.

Apply the first law of thermodynamics to calculate enthalpy, internal energy, and heat transfer in 15 calorimetry problems.

Use Hess's law and standard enthalpies of formation to compute reaction enthalpy for 10 reactions.

Predict entropy sign changes and calculate Gibbs free energy to determine spontaneity at varying temperatures.

Interpret a Gibbs free energy versus temperature plot and identify the crossover temperature for a reaction.

Determine reaction rate laws from initial-rate data and calculate rate constants with correct units.

Apply integrated rate laws for zero-, first-, and second-order reactions to solve for concentration and half-life.

Explain collision theory and the Arrhenius equation, and interpret energy-profile diagrams with and without a catalyst.

Write and evaluate mechanisms, identifying intermediates, catalysts, and the rate-determining step.

Assign oxidation states and balance complex redox reactions, then calculate cell potential using standard reduction potentials.

Determine spontaneity of electrochemical cells from E-cell and relate cell potential to Gibbs free energy.

Distinguish galvanic and electrolytic cells and calculate quantities of substance produced by electrolysis using Faraday's law.

Describe nuclear decay modes and balance nuclear equations, including half-life calculations.

Complete two full-length timed practice exams, simulating test-day conditions without notes.

Review every missed item, classifying errors and reworking each problem to a correct solution.

Re-drill the highest-frequency weak areas identified across weeks 1 through 7 using targeted 10-problem sets.

Recite the consolidated equation sheet from memory and confirm retention of key constants and definitions.