Learn Chemistry

30 topics covering all of General Chemistry. From measurement basics to electrochemistry, with learning objectives, concept summaries, and worked examples.

1Units & MeasurementMaster the foundation of chemistry: significant figures, scientific notation, dimensional analysis, and the metric system.9 objectives2Classification of MatterUnderstand the classification of matter: elements, compounds, mixtures, and the states of matter.6 objectives3Atomic StructureExplore atomic structure: protons, neutrons, electrons, isotopes, atomic mass, and the history of atomic models.7 objectives4Naming CompoundsLearn systematic naming of ionic compounds, molecular compounds, acids, and polyatomic ions using IUPAC rules.10 objectives5Predicting & BalancingBalance chemical equations and predict products across the five major reaction families: synthesis, decomposition, single replacement, double replacement, and combustion.6 objectives6Reactions in SolutionUnderstand reactions in aqueous solution: solubility rules, electrolytes, dissociation, ionic equations, precipitation, acid-base, and gas-forming reactions.7 objectives7Redox & BalancingAssign oxidation numbers, recognize redox reactions, identify oxidizing and reducing agents, write half-reactions, and balance redox equations by both the oxidation-number and half-reaction methods.6 objectives8Moles & CompositionUnderstand the mole concept, molar mass, percent composition, empirical formulas, and molecular formulas.7 objectives9Solutions & MolarityLearn about solution preparation, molarity, dilution, and concentration units used in chemistry.11 objectives10StoichiometryMaster stoichiometric calculations: mole ratios, mass-to-mass conversions, limiting reagents, theoretical yield, and percent yield.7 objectives11Solution StoichiometryApply stoichiometric principles to reactions in aqueous solution, including titrations (acid-base and redox), gravimetric analysis, and purity calculations.4 objectives12Electron StructureBuild the modern model of the atom: shells and orbitals, quantum numbers, electron configurations, orbital diagrams, common exceptions, and the connection to light through the Bohr model and de Broglie wavelength.9 objectives13Periodic TrendsRead the periodic table as a predictive tool: valence electrons, atomic and ionic radius, ionization energy, electronegativity, electron affinity, and using trends to predict ionic vs covalent bonding.6 objectives14Lewis StructuresDraw Lewis structures for molecules and polyatomic ions that satisfy the regular octet (and the duet for hydrogen), apply the octet rule and identify its exceptions, calculate formal charges, and identify resonance structures.4 objectives15Molecular ShapePredict molecular geometry using VSEPR theory, determine polarity, understand hybridization with sigma and pi bonds, and build molecular-orbital diagrams to find bond order and magnetism.4 objectives16ThermochemistryStudy energy changes in chemical reactions: calorimetry, Hess's law, standard enthalpies of formation, bond energies, and stoichiometric enthalpy.6 objectives17Gas LawsConvert between pressure units, apply the individual and combined gas laws, use the ideal gas law for pressure/volume/amount/temperature calculations, find molar mass and density, work with Dalton's partial pressures, perform gas stoichiometry, apply the van der Waals equation for non-ideal gases, use Graham's law for effusion, and calculate RMS molecular speeds.9 objectives18IMFs & PhasesIdentify and rank intermolecular forces, interpret phase diagrams and heating/cooling curves, classify crystalline solids, calculate the energy required for temperature and phase changes, and compute density and atomic radius from cubic unit-cell parameters.7 objectives19Colligative PropertiesUnderstand colligative properties: boiling point elevation, freezing point depression, osmotic pressure, and Raoult's law.5 objectives20KineticsStudy reaction rates, rate laws, reaction order, activation energy, and reaction mechanisms.7 objectives21EquilibriumUnderstand chemical equilibrium: equilibrium constants, Le Chatelier's principle, ICE tables, and reaction quotients.7 objectives22Acids & BasesStudy acid-base chemistry: pH calculations, strong/weak acids and bases, Ka/Kb, conjugate pairs, and neutralization.11 objectives23BuffersUnderstand buffer solutions: Henderson-Hasselbalch equation, buffer capacity, and buffer preparation.7 objectives24Solubility EquilibriaStudy solubility product constants (Ksp), molar solubility, common ion effect, and selective precipitation.7 objectives25ThermodynamicsExplore spontaneity, entropy, Gibbs free energy, and the second and third laws of thermodynamics.7 objectives26ElectrochemistryUnderstand galvanic and electrolytic cells, cell potentials, the Nernst equation, and Faraday's law.6 objectives27Coordination ChemistryStudy coordination compounds: nomenclature, isomerism, crystal field theory, and transition metal complexes.6 objectives28Nuclear ChemistryExplore radioactive decay, nuclear reactions, half-life calculations, fission, and fusion.5 objectives29Main Group ChemistryPredict the properties and reactions of the representative (main-group) elements from periodic trends, compare their allotropes, and learn the major industrial processes that make ammonia, nitric acid, sulfuric acid, and the metals.5 objectives30Review & CapstoneA comprehensive end-of-course review built from a 50-question practice final exam, organized into seven strands that span the whole general-chemistry sequence. Recall the key method for each strand, refresh the prerequisites, then test every skill on fresh practice problems.7 objectives
Foundations Molecular Quantitative Reactions Physical Advanced

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205 learning objectives across 30 topics. Step-by-step worked examples that teach the process, not just the answer.

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