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Chemistry

Study Unit 1 chemical principles through original lessons, accessible equations, supplied-data investigations, practical preparation, formative practice, and objective-level mastery. Online progress does not certify supervised laboratory competence.

4038 minestimated study time ENcourse language

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Unit 1

Chemical Principles and Applications I

Develop atomic, bonding, quantitative, kinetic, equilibrium, periodic, redox, and analytical models while preserving the boundary between online learning and supervised laboratory competence.
1

Fundamentals in Chemistry

Free

Build atomic, bonding, mole, redox, gas, and energetics models and use them to interpret evidence and perform traceable calculations.

600 min · 27 published activities
  1. Fundamentals in Chemistry Readiness Check 14 min
  2. Theories, Atoms, and Isotopes 22 min
  3. Radioactivity and Nuclear Equations 23 min
  4. Radioisotopes: Benefit, Risk, and Use 20 min
  5. Relative Atomic Mass 20 min
  6. Spectra, Energy Levels, and Orbitals 24 min
  7. Electronic Configurations 23 min
  8. Ionisation-Energy Evidence 23 min
  9. Forces and Physical Properties 22 min
  10. Primary and Coordinate Bonding 24 min
  11. Intermolecular Forces and Polarity 22 min
  12. Molecular Shapes and Bond Angles 24 min
  13. Hybridisation, Resonance, and Organic Shape 23 min
  14. Crystalline Lattices and Properties 22 min
  15. Moles, Particles, and Molar Volume 21 min
  16. Balanced Equations and Reacting Amounts 23 min
  17. Gas and Solution Stoichiometry 23 min
  18. Empirical and Molecular Formulae 22 min
  19. Titration Quality and Calculations 24 min
  20. Redox Half-Equations and Reactivity 24 min
  21. Kinetic Theory and Gas Behaviour 22 min
  22. Gas-Law Calculations 23 min
  23. Liquids, Melting, and Vaporisation 19 min
  24. Energy Profiles and Bond Energies 23 min
  25. Enthalpy Types and Lattice Energy 17 min
  26. Hess, Born-Haber, and Calorimetry 17 min
  27. Fundamentals in Chemistry Review Challenge 36 min
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2

Kinetics and Equilibria

Subscription required · from XCD 25.00 / month, all courses

Use rate evidence, equilibrium models, acid-base systems, solubility, and electrochemistry to reason about laboratory, biological, and industrial processes.

584 min · 26 published activities
  1. Kinetics and Equilibria Readiness Check 14 min
  2. Rate Language and Mechanisms 22 min
  3. Designing Rate Experiments 22 min
  4. Rate Equations and Orders 23 min
  5. Deducing Mechanisms from Rate Data 22 min
  6. Rate Graphs and Tangents 22 min
  7. Initial Rates, Constants, and Half-Life 23 min
  8. Boltzmann Distributions, Temperature, and Catalysts 23 min
  9. Dynamic Equilibrium 20 min
  10. Kc and Kp Expressions 22 min
  11. Equilibrium-Constant Calculations 24 min
  12. Le Chatelier and Industrial Trade-Offs 23 min
  13. Brønsted-Lowry Acids and Bases 21 min
  14. pH, pOH, and Water Equilibria 23 min
  15. Ka, Kb, and Logarithmic Calculations 24 min
  16. Titration Curves 22 min
  17. Indicator Selection 20 min
  18. Buffer Action and Calculation 23 min
  19. Buffers in Living and Industrial Systems 20 min
  20. Solubility Product and Common Ions 22 min
  21. Ksp and Selective Precipitation 24 min
  22. Standard Potentials and the SHE 22 min
  23. Measuring Electrode Potentials 22 min
  24. Cell Potentials, Flow, and Feasibility 24 min
  25. Batteries, Fuel Cells, and Storage 22 min
  26. Kinetics and Equilibria Review Challenge 35 min
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3

Chemistry of the Elements

Subscription required · from XCD 25.00 / month, all courses

Explain periodic and group trends, transition-element behavior, and systematic ion identification through structure, bonding, energetics, equilibria, and redox evidence.

600 min · 27 published activities
  1. Chemistry of the Elements Readiness Check 14 min
  2. Period 3 Physical Trends 22 min
  3. Period 3 Reactions and Oxidation 22 min
  4. Period 3 Oxides, Chlorides, and Water 23 min
  5. Period 3 Acid-Base Trends 22 min
  6. Period 3 Bonding and Uses 20 min
  7. Group II Trends and Reactions 23 min
  8. Group II Solubility and Decomposition 23 min
  9. Group II Compounds in Use 19 min
  10. Group IV Structure and Tetrachlorides 22 min
  11. Group IV Oxides and Stability 23 min
  12. Silica Ceramics: Properties and Use 20 min
  13. Halogen Physical Trends 20 min
  14. Halogens as Oxidising Agents 23 min
  15. Hydrogen Halides and Bond Energy 21 min
  16. Halide-Ion Tests 24 min
  17. Chlorine Disproportionation 21 min
  18. Transition Elements and Characteristics 22 min
  19. Transition Configurations and Trends 23 min
  20. Coloured Ions and Complex Shapes 23 min
  21. Vanadium and Redox Systems 24 min
  22. Ligand Exchange and Stability 22 min
  23. Flame Tests 18 min
  24. Systematic Cation Analysis 24 min
  25. Systematic Anion Analysis 24 min
  26. Ionic Equations and Unknown Analysis 22 min
  27. Chemistry of the Elements Review Challenge 36 min
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Unit 2

Chemical Principles and Applications II

Apply organic, analytical, industrial, and environmental chemistry using safe models, quantitative evidence, and sustainable decision criteria.
1

The Chemistry of Carbon Compounds

Subscription required · from XCD 25.00 / month, all courses

Represent, name, analyse, and predict organic structures, reactions, mechanisms, acid-base behaviour, and macromolecules.

624 min · 26 published activities
  1. The Chemistry of Carbon Compounds readiness 12 min
  2. Carbon bonding and catenation 22 min
  3. Empirical, molecular, and structural formulae 24 min
  4. IUPAC naming 26 min
  5. Structural isomerism 22 min
  6. Geometrical and optical stereoisomerism 24 min
  7. Modulus-like molecular-model limits 26 min
  8. Alkane reactions and radical substitution 22 min
  9. Alkene electrophilic addition 24 min
  10. Alcohol reactions 26 min
  11. Halogenoalkanes and nucleophilic substitution 22 min
  12. Carbonyl addition and identification 24 min
  13. Carboxylic acids and derivatives 26 min
  14. Benzene and electrophilic substitution 22 min
  15. Phenols, amines, and diazonium chemistry 24 min
  16. Organic synthesis pathways 26 min
  17. Acidity of organic compounds 22 min
  18. Basicity of nitrogen compounds 24 min
  19. Amino-acid acid-base behaviour 26 min
  20. Addition polymers 22 min
  21. Condensation polymers 24 min
  22. Monomer and repeat-unit deduction 26 min
  23. Proteins and amino acids 22 min
  24. Carbohydrates and hydrolysis 24 min
  25. Structure, properties, use, and lifecycle 26 min
  26. The Chemistry of Carbon Compounds review 36 min
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2

Analytical Methods and Separation Techniques

Subscription required · from XCD 25.00 / month, all courses

Quantify measurement uncertainty and select, interpret, and evaluate volumetric, gravimetric, spectroscopic, chromatographic, and phase-separation methods.

768 min · 32 published activities
  1. Analytical Methods and Separation Techniques readiness 12 min
  2. Measurement error and uncertainty 22 min
  3. Propagation and reporting 24 min
  4. Equipment and procedure selection 26 min
  5. Volumetric principles and standards 22 min
  6. Titration calculations 24 min
  7. Titration quality and applications 26 min
  8. Gravimetric principles and apparatus 22 min
  9. Gravimetric calculations and quality 24 min
  10. Quantised energy and spectra 26 min
  11. UV-visible instrument pathway 22 min
  12. Chromophores and absorption 24 min
  13. Beer–Lambert calculations 26 min
  14. UV-visible applications and limitations 22 min
  15. Infrared absorption principles 24 min
  16. Infrared instrument pathway 26 min
  17. Functional-group deduction 22 min
  18. Infrared limitations and applications 24 min
  19. Mass-spectrometer stages 26 min
  20. Isotope and molecular-mass evidence 22 min
  21. Fragmentation and partial structure 24 min
  22. Partition and adsorption principles 26 min
  23. Paper and thin-layer chromatography 22 min
  24. Gas and liquid chromatography 24 min
  25. Chromatographic method selection 26 min
  26. Chromatographic applications and quality 22 min
  27. Vapour pressure and distillation 24 min
  28. Solvent extraction and partition 26 min
  29. Recrystallisation and sublimation 22 min
  30. Separation-method selection 24 min
  31. Industrial and laboratory applications 26 min
  32. Analytical Methods and Separation Techniques review 36 min
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3

Industry and the Environment

Subscription required · from XCD 25.00 / month, all courses

Apply equilibrium, kinetics, energetics, electrochemistry, Green Chemistry, risk, and environmental evidence to industrial processes.

862 min · 36 published activities
  1. Industry and the Environment readiness 12 min
  2. Plant-location and operation factors 22 min
  3. Industrial safety and risk 24 min
  4. Green Chemistry and process assessment 26 min
  5. Alumina purification and electrolysis 22 min
  6. Aluminium uses and properties 24 min
  7. Aluminium impacts and circularity 26 min
  8. Crude-oil separation and conversion 22 min
  9. Petroleum products and uses 24 min
  10. Crude-oil impacts and transition 26 min
  11. Haber-process chemistry and conditions 22 min
  12. Ammonia uses and impacts 24 min
  13. Fermentation and hydration routes 26 min
  14. Ethanol uses and fuel trade-offs 22 min
  15. Social and health context 24 min
  16. Ethanol-process impacts 26 min
  17. Chlor-alkali electrolysis 22 min
  18. Chlorine-product uses 24 min
  19. Chlorine risks and environmental impact 26 min
  20. Contact-process chemistry 22 min
  21. Sulfuric-acid uses and impacts 24 min
  22. Water-resource importance and quality 26 min
  23. Treatment and desalination 22 min
  24. Wastewater and oxygen demand 24 min
  25. Water-quality tests and interpretation 26 min
  26. Water-process impact and equity 22 min
  27. Ozone formation and depletion 24 min
  28. Greenhouse effect and climate forcing 26 min
  29. Air pollutants and health or ecosystem effects 22 min
  30. Acid deposition and nitrogen chemistry 24 min
  31. Photochemical smog 26 min
  32. Atmospheric-pollution control 22 min
  33. Waste categories and characterisation 24 min
  34. Prevention, reuse, recycling, treatment, and disposal 26 min
  35. Solid-waste impacts and justice 22 min
  36. Industry and the Environment review 36 min
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