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Chemistry

178 topics open, in the order they build on each other.

  1. Gas Volumes and the Ideal Gas Equationages 16 to 17 · 8 questions
  2. Enthalpy Change, Standard Conditions and Calorimetryages 16 to 17 · 8 questions
  3. Hess's Law and Enthalpy Cyclesages 16 to 17 · 8 questions
  4. Ionisation Energy and the Evidence for Sub-Shellsages 16 to 17 · 8 questions
  5. Naming Organic Compounds and the Formulas That Show Structureages 16 to 17 · 8 questions
  6. Isomerism: Same Formula, Different Moleculeages 16 to 17 · 8 questions
  7. Orbitals, Sub-Shells and Electron Configurationages 16 to 17 · 8 questions
  8. Trends Across Period 3: Radius, Ionisation Energy and Melting Pointages 16 to 17 · 8 questions
  9. Period 3 Oxides and the Acid-Base Divideages 16 to 18 · 8 questions
  10. Group 2: Reactivity and Solubility Trendsages 16 to 17 · 8 questions
  11. Group 7: Oxidising Power, Displacement and Halide Testsages 16 to 17 · 8 questions
  12. Oxidation Numbers and Balancing Redox Equationsages 16 to 18 · 8 questions
  13. Lattice Enthalpy and Born-Haber Cyclesages 17 to 18 · 8 questions
  14. Entropy and the Spread of Energyages 17 to 18 · 8 questions
  15. Free Energy and Whether a Reaction Is Feasibleages 17 to 18 · 8 questions
  16. Rate Equations and Orders of Reactionages 17 to 18 · 8 questions
  17. Reading Orders and Half-Lives from Rate Graphsages 17 to 18 · 8 questions
  18. Standard Electrode Potentials and Predicting Redox Reactionsages 17 to 18 · 8 questions
  19. Cells That Do Work: Batteries, Fuel Cells and Corrosionages 17 to 18 · 8 questions
  20. Redox Titrations with Manganate(VII) and Thiosulfateages 17 to 18 · 8 questions
  21. The Rate-Determining Step and Reaction Mechanismsages 17 to 18 · 8 questions
  22. The Arrhenius Equation and Finding Activation Energyages 17 to 18 · 8 questions
  23. The Equilibrium Constant Kcages 16 to 18 · 8 questions
  24. Kp, Partial Pressures and Gas Equilibriaages 17 to 18 · 8 questions
  25. pH, Kw and Strong Acids and Basesages 17 to 18 · 8 questions
  26. Solubility Equilibria and When a Precipitate Appearsages 17 to 18 · 8 questions
  27. Transition Metals: Variable Oxidation State, Colour and Catalysisages 17 to 18 · 8 questions
  28. Complex Ions, Ligands and Their Shapesages 17 to 18 · 8 questions
  29. Weak Acids, Ka and pKaages 17 to 18 · 8 questions
  30. Buffers and Titration Curvesages 17 to 18 · 8 questions
  31. Metal Aqua Ions: Acidity, Ligand Exchange and Precipitationages 17 to 18 · 8 questions
  32. Calibration, the Blank and What Makes a Measurement Trustworthyages 18 to 19 · 8 questions
  33. Molecular Orbital Theory for Homonuclear Diatomicsages 18 to 19 · 8 questions
  34. Heteronuclear Diatomics and Polarity in Orbital Termsages 18 to 19 · 8 questions
  35. Signal, Noise and the Limit of Detectionages 18 to 19 · 12 questions
  36. The Beer-Lambert Law and Quantitative Absorptionages 18 to 19 · 8 questions
  37. Uncertainty in a Measurement and Where It Comes Fromages 18 to 19 · 8 questions
  38. Propagating Uncertainty Through a Calculationages 18 to 19 · 8 questions
  39. Significance Tests for Chemical Dataages 18 to 20 · 16 questions
  40. Acid-Base Models Beyond Bronsted: Lewis, Solvents and Hard and Softages 19 to 20 · 8 questions
  41. Coordination Compounds: Naming, Geometry and Isomerismages 19 to 20 · 8 questions
  42. Crystal field theory and the splitting of d orbitalsages 19 to 20 · 8 questions
  43. How a Chromatographic Separation Worksages 19 to 20 · 8 questions
  44. Least-Squares Calibration and the Uncertainty of a Result Read From Itages 19 to 20 · 16 questions
  45. Main-Group Chemistry: What Changes Down a p-Block Groupages 19 to 20 · 8 questions
  46. Resolution, Efficiency and the van Deemter Curveages 19 to 20 · 8 questions
  47. Gas Chromatography: Columns, Temperature Programming and Detectorsages 19 to 20 · 8 questions
  48. The spectrochemical series, spin state and magnetismages 19 to 21 · 8 questions
  49. Free-Radical Substitution in Alkanesages 16 to 17 · 8 questions
  50. Electrophilic Addition to Alkenesages 16 to 17 · 8 questions
  51. Nucleophilic Substitution in Haloalkanesages 16 to 18 · 8 questions
  52. Elimination and Choosing Between Two Pathwaysages 16 to 18 · 8 questions
  53. Alcohols: Classification, Oxidation and Dehydrationages 16 to 17 · 8 questions
  54. Aldehydes and Ketones: Nucleophilic Addition and the Tests That Separate Themages 17 to 18 · 8 questions
  55. Benzene: Delocalisation and Electrophilic Substitutionages 17 to 18 · 8 questions
  56. Carboxylic Acids, Esters and Hydrolysisages 17 to 18 · 8 questions
  57. Addition and Condensation Polymersages 17 to 18 · 8 questions
  58. Amines and Amides: Basicity and the Nitrogen Functional Groupsages 17 to 18 · 8 questions
  59. Mass Spectra and Infrared: Identifying an Unknownages 17 to 18 · 8 questions
  60. NMR Spectra: Counting Environmentsages 17 to 18 · 8 questions
  61. Hybridisation, Conjugation and Delocalisation in Organic Moleculesages 18 to 19 · 8 questions
  62. Curly Arrows as the Language of Mechanismages 18 to 19 · 8 questions
  63. Molecular Symmetry: Elements, Operations and Point Groupsages 18 to 19 · 8 questions
  64. pKa as a Predictive Tool in Organic Chemistryages 18 to 19 · 8 questions
  65. Conformation: Newman Projections and the Chairages 18 to 19 · 8 questions
  66. Chirality, R and S Assignment and Optical Activityages 18 to 20 · 8 questions
  67. The Schrodinger Equation and What a Wavefunction Saysages 18 to 19 · 8 questions
  68. The Particle in a Box: Where Quantised Levels Come Fromages 18 to 19 · 8 questions
  69. The Hydrogen Atom: Quantum Numbers and Orbital Shapesages 18 to 19 · 8 questions
  70. Many-Electron Atoms: Spin, Antisymmetry and Effective Chargeages 18 to 20 · 8 questions
  71. Atomic Absorption and Emission for Trace Metalsages 19 to 20 · 8 questions
  72. Diastereomers, Meso Compounds and Fischer Projectionsages 19 to 20 · 8 questions
  73. HPLC: Reversed Phase, Gradients and Method Developmentages 19 to 21 · 8 questions
  74. Molecular Mechanics: Force Fields and Conformational Searchingages 19 to 20 · 13 questions
  75. Molecular Motion Quantised: The Oscillator and the Rotorages 19 to 20 · 8 questions
  76. Selection Rules and Why Some Transitions Never Appearages 19 to 20 · 8 questions
  77. Character Tables and What Symmetry Predictsages 19 to 20 · 8 questions
  78. Reading Bond Lengths and Force Constants from Spectraages 19 to 20 · 8 questions
  79. Electronic Spectra, Franck-Condon and the Origin of Colourages 19 to 20 · 8 questions
  80. Stereochemistry as Mechanistic Evidenceages 19 to 20 · 8 questions
  81. SN1 and SN2: Kinetics, Stereochemistry and What Decides the Routeages 19 to 20 · 8 questions
  82. Carbocations: Stability, Rearrangement and Neighbouring Groupsages 19 to 20 · 8 questions
  83. E1, E2 and E1cb: Three Ways to Lose Two Groupsages 19 to 20 · 8 questions
  84. Electrophilic Addition Revisited: Bridged Ions and Stereospecificityages 19 to 21 · 8 questions
  85. Hydroboration, Oxidation and Cleavage of Alkenes and Alkynesages 19 to 21 · 8 questions
  86. Radical Selectivity, Stability and Allylic Positionsages 19 to 21 · 8 questions
  87. Substitution Against Elimination: Predicting the Major Productages 19 to 21 · 8 questions
  88. Symmetry-Adapted Orbitals for Polyatomic Moleculesages 19 to 20 · 8 questions
  89. What an Excited Molecule Does Next: Fluorescence and Phosphorescenceages 19 to 21 · 8 questions
  90. The Boltzmann Distribution over Molecular Levelsages 19 to 21 · 8 questions
  91. Aromaticity: Huckel's Rule and Antiaromatic Systemsages 20 to 21 · 8 questions
  92. Directing Effects in Electrophilic Aromatic Substitutionages 20 to 22 · 8 questions
  93. Hartree-Fock and What a Basis Set Decidesages 20 to 21 · 8 questions
  94. Density Functional Theory and Choosing a Functionalages 20 to 21 · 8 questions
  95. Ligand field theory and pi bonding in complexesages 20 to 21 · 8 questions
  96. Electronic spectra of complexes and Tanabe-Sugano diagramsages 20 to 22 · 8 questions
  97. Nucleophilic Addition and the Tetrahedral Intermediateages 20 to 21 · 8 questions
  98. Acetals, Imines and Protecting Groupsages 20 to 21 · 8 questions
  99. Nucleophilic Acyl Substitution and the Reactivity Ladderages 20 to 21 · 8 questions
  100. Enols, Enolates and Alpha Substitutionages 20 to 21 · 8 questions
  101. Aldol and Claisen: Building Carbon Skeletonsages 20 to 21 · 8 questions
  102. Nucleophilic Aromatic Substitution, Diazonium Salts and Heterocyclesages 20 to 22 · 8 questions
  103. Organometallic Nucleophiles: Grignard and Organolithium Reagentsages 20 to 21 · 8 questions
  104. Pericyclic Reactions: The Diels-Alder and Orbital Symmetryages 20 to 22 · 8 questions
  105. The Molecular Partition Functionages 20 to 21 · 8 questions
  106. Entropy from Counting: The Molecular Meaning of the Third Lawages 20 to 21 · 8 questions
  107. Steady-State and Pre-Equilibrium Approximationsages 20 to 21 · 8 questions
  108. Chain Reactions, Branching and Explosion Limitsages 20 to 21 · 8 questions
  109. Stability Constants and the Kinetics of Ligand Substitutionages 20 to 21 · 8 questions
  110. Electron Counting and the Eighteen-Electron Ruleages 20 to 21 · 8 questions
  111. Metals in Biology: Active Sites, Electron Transfer and Chelationages 20 to 21 · 8 questions
  112. Organometallic Ligands: Carbonyls, Phosphines and Hapticityages 20 to 21 · 8 questions
  113. Elementary Steps of Catalysis: Oxidative Addition and Insertionages 20 to 22 · 8 questions
  114. Transition State Theory and the Eyring Equationages 20 to 22 · 8 questions
  115. Chemical Potential and Gibbs Energy That Depends on Compositionages 20 to 21 · 8 questions
  116. Computed Geometries, Frequencies and Reaction Barriersages 20 to 22 · 8 questions
  117. Real Gases, Fugacity and Activityages 20 to 21 · 18 questions
  118. Phase Diagrams, the Clapeyron Equation and the Phase Ruleages 20 to 22 · 8 questions
  119. Ideal and Real Solutions: Raoult, Henry and Excess Functionsages 20 to 22 · 8 questions
  120. Electrolyte Solutions and the Debye-Huckel Limiting Lawages 20 to 22 · 8 questions
  121. Amino Acids and Peptides: Zwitterions and the Peptide Bondages 21 to 22 · 8 questions
  122. Ion Exchange and Electrophoretic Separationsages 20 to 21 · 8 questions
  123. Mass Spectrometry: Ionisation Methods and Mass Analysersages 20 to 21 · 8 questions
  124. Accurate Mass and Isotope Patterns as Formula Evidenceages 20 to 21 · 8 questions
  125. Hyphenated Techniques: GC-MS, LC-MS and Tandem Fragmentationages 20 to 22 · 8 questions
  126. Reading a Proton NMR Spectrum: Shift, Integration and Multiplicityages 20 to 21 · 11 questions
  127. Carbon-13, DEPT and Coupling Constantsages 20 to 21 · 8 questions
  128. Carbohydrates: Anomers, Mutarotation and the Glycosidic Bondages 21 to 22 · 8 questions
  129. Catalytic Cycles: Tracing Steps Around a Closed Loopages 21 to 22 · 8 questions
  130. Close Packing, Unit Cells and Ionic Lattice Typesages 21 to 22 · 8 questions
  131. Band Theory, Defects and Why Some Solids Conductages 21 to 22 · 8 questions
  132. Retrosynthesis: Disconnections and Synthonsages 21 to 22 · 8 questions
  133. Planning a Multi-Step Synthesis: Order, Protection and Yieldages 21 to 22 · 8 questions
  134. Green Chemistry Metrics: Atom Economy, E-Factor and Solvent Choiceages 20 to 21 · 8 questions
  135. Designing a Safer Process: Hazard, Scale and Wasteages 21 to 22 · 15 questions
  136. The Nernst Equation and Cells Away from Standard Conditionsages 21 to 22 · 8 questions
  137. Electrode Kinetics: Exchange Current and Overpotentialages 21 to 22 · 8 questions
  138. Two-Dimensional NMR and Assigning a Whole Structureages 21 to 22 · 8 questions
  139. Potentiometry, Ion-Selective Electrodes and Voltammetryages 21 to 22 · 8 questions
  140. Method Validation: Accuracy, Precision, Recovery and Robustnessages 21 to 22 · 8 questions
  141. Chain Growth and Step Growth: Two Routes to a Polymerages 22 to 24 · 8 questions
  142. Cross-Coupling in Practice: Choosing Ligand, Base and Conditionsages 22 to 24 · 8 questions
  143. Reading a Paper and Its Supporting Informationages 22 to 23 · 8 questions
  144. Searching the Chemical Literature by Structure and by Reactionages 22 to 23 · 8 questions
  145. Characterisation Standards: What Counts as Proof of a New Compoundages 22 to 24 · 8 questions
  146. Solid-State Synthesis: Controlling Phase, Defect and Dopantages 22 to 23 · 8 questions
  147. Porous Frameworks: Pores, Guests and Stabilityages 22 to 23 · 8 questions
  148. Strategy in Retrosynthesis: Strategic Bonds and Convergent Routesages 22 to 23 · 8 questions
  149. Protecting Group Strategy: Orthogonality and the Order of Removalages 22 to 23 · 8 questions
  150. Structure Elucidation from a Complete Data Setages 22 to 23 · 8 questions
  151. NMR After Assignment: Relaxation, Distance and Exchangeages 22 to 23 · 8 questions
  152. Reducible Representations and Predicting Infrared and Raman Activityages 22 to 23 · 8 questions
  153. Choosing Between Vibrational Methods: Infrared, Raman and Resonance Ramanages 22 to 24 · 8 questions
  154. Single-Crystal Diffraction: From Reflections to a Refined Structureages 22 to 24 · 8 questions
  155. Substrate Control of Stereochemistry: Models for Facial Selectivityages 22 to 23 · 8 questions
  156. Asymmetric Catalysis: Where Enantioselectivity Comes Fromages 22 to 23 · 8 questions
  157. Organocatalysis: Enamine and Iminium Activationages 22 to 23 · 8 questions
  158. Controlled Radical Polymerisation and Block Architectureages 23 to 24 · 8 questions
  159. Electron Correlation and Methods Past Hartree-Fockages 23 to 24 · 8 questions
  160. Excited States by Calculation and Simulated Electronic Spectraages 23 to 24 · 8 questions
  161. Functionalising a Carbon-Hydrogen Bond Without a Handleages 23 to 24 · 8 questions
  162. Glass Transition, Crystallinity and Entanglement in Polymersages 23 to 24 · 8 questions
  163. Molecular Recognition: Preorganisation, Complementarity and Binding Constantsages 23 to 24 · 8 questions
  164. Olefin Metathesis and Ring-Closing Strategyages 23 to 24 · 8 questions
  165. Photoredox and Electrochemical Routes to Radical Intermediatesages 23 to 24 · 8 questions
  166. Putting the Solvent Into a Calculationages 23 to 24 · 8 questions
  167. Molecular Dynamics and Free Energy from Samplingages 23 to 24 · 8 questions
  168. Reaction Dynamics: Trajectories Across a Potential Energy Surfaceages 23 to 24 · 8 questions
  169. Risk Assessment for a Reaction Nobody Has Run Hereages 23 to 24 · 8 questions
  170. Self-Assembly: Templates, Reversibility and Error Correctionages 23 to 24 · 8 questions
  171. Taking a Route into Flow and Onto Scaleages 23 to 24 · 8 questions
  172. Reading a Total Synthesis as an Argumentages 23 to 24 · 8 questions
  173. Writing a Research Proposal: Question, Feasibility and Milestonesages 23 to 24 · 8 questions
  174. Reporting Chemical Data: Statistics, Figures and Data Availabilityages 23 to 24 · 15 questions
  175. Ultrafast Spectroscopy and Watching a Reaction Happenages 23 to 24 · 8 questions
  176. From Hit to Lead: Structure-Activity Relationshipsages 23 to 24 · 8 questions
  177. Drug-Like Properties: Solubility, Permeability and Metabolic Fateages 23 to 24 · 8 questions
  178. Chemical Biology: Bioconjugation and Reporting on a Molecule in a Cellages 23 to 24 · 8 questions
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