Learn Chemistry
28 topics covering all of General Chemistry. From measurement basics to electrochemistry — with learning objectives, concept summaries, and worked examples.
Chemical Reactions
Oxidation & Redox
Learn to assign oxidation numbers and balance simple redox reactions by the change-in-oxidation-number method.
Lesson 6Reactions in Solution
Understand precipitation reactions, acid-base neutralization, and net ionic equations in aqueous solution.
Lesson 7Redox in Solution
Master the half-reaction method for balancing redox equations in acidic and basic aqueous solutions.
Lesson 8Predicting Products
Learn to predict products for all five major reaction types: synthesis, decomposition, single replacement, double replacement, and combustion.
Quantitative Chemistry
Moles & Composition
Understand the mole concept, molar mass, percent composition, empirical formulas, and molecular formulas.
Lesson 10Solutions & Molarity
Learn about solution preparation, molarity, dilution, and concentration units used in chemistry.
Lesson 11Stoichiometry
Master stoichiometric calculations: mole ratios, mass-to-mass conversions, limiting reagents, theoretical yield, and percent yield.
Lesson 12Solution Stoichiometry
Apply stoichiometric principles to reactions in aqueous solution, including titrations and gravimetric analysis.
Thermodynamics & Kinetics
Thermochemistry
Study energy changes in chemical reactions: enthalpy, calorimetry, Hess's law, and standard enthalpies of formation.
Lesson 20Kinetics
Study reaction rates, rate laws, reaction order, activation energy, and reaction mechanisms.
Lesson 25Thermodynamics
Explore spontaneity, entropy, Gibbs free energy, and the second and third laws of thermodynamics.
States of Matter
Gas Laws
Master the ideal gas law, combined gas law, partial pressures, gas stoichiometry, and kinetic molecular theory.
Lesson 18IMFs & Phases
Explore intermolecular forces, phase diagrams, vapor pressure, and properties of liquids and solids.
Lesson 19Colligative Properties
Understand colligative properties: boiling point elevation, freezing point depression, osmotic pressure, and Raoult's law.
Equilibrium & Acids
Equilibrium
Understand chemical equilibrium: equilibrium constants, Le Chatelier's principle, ICE tables, and reaction quotients.
Lesson 22Acids & Bases
Study acid-base chemistry: pH calculations, strong/weak acids and bases, Ka/Kb, conjugate pairs, and neutralization.
Lesson 23Buffers
Understand buffer solutions: Henderson-Hasselbalch equation, buffer capacity, and buffer preparation.
Lesson 24Solubility Equilibria
Study solubility product constants (Ksp), molar solubility, common ion effect, and selective precipitation.
Advanced Topics
Electrochemistry
Understand galvanic and electrolytic cells, cell potentials, the Nernst equation, and Faraday's law.
Lesson 27Coordination Chemistry
Study coordination compounds: nomenclature, isomerism, crystal field theory, and transition metal complexes.
Lesson 28Nuclear Chemistry
Explore radioactive decay, nuclear reactions, half-life calculations, fission, and fusion.
Full Worked Examples Coming Soon
204 learning objectives across 28 topics. Step-by-step worked examples that teach the process, not just the answer.
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