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Chemistry

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Chemistry at A2 covers advanced physical, organic, and inorganic principles. Learners investigate equilibria, electrochemistry, transition metals, and multistep organic synthesis. Analytical techniques such as spectroscopy and chromatography are central to applying chemistry in industrial and research contexts.

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Topics

Unit 1: The Particulate Nature of Matter

  • 1.1: States of Matter (gas laws, ideal gas equation, deviations from ideal behavior)
  • 1.2: Diffusion & Brownian Motion (molecular movement, kinetic theory applications)
  • 1.3: Changes of State (enthalpy of fusion/vaporization, phase diagrams)

Unit 2: Experimental Chemistry

  • 2.1: Laboratory Techniques (titrations, heating, filtration, distillation)
  • 2.2: Analysis (chromatography, flame tests, gas tests)
  • 2.3: Safety & Experimental Design (hazard symbols, risk assessments)
  • 2.4: Quantitative Analysis (titration calculations, empirical & molecular formulae)

Unit 3: Atomic Structure & Bonding

  • 3.1: Atomic Models & Isotopes (relative masses, isotopic abundance)
  • 3.2: Electron Configuration (s, p, d orbitals, periodicity)
  • 3.3: Ionic Bonding (lattice energy, giant ionic structures)
  • 3.4: Covalent Bonding (molecular shapes, bond polarity, giant molecular structures)
  • 3.5: Metallic Bonding (delocalized electrons, conductivity, alloys)

Unit 4: Stoichiometry & Calculations

  • 4.1: Mole Concept & Avogadro’s Law
  • 4.2: Balanced Equations & Limiting Reagents
  • 4.3: Gas Volume & Molar Mass Calculations
  • 4.4: Solution Concentrations & Dilution Calculations

Unit 5: The Periodic Table & Periodicity

  • 5.1: Periodic Trends (ionization energy, electronegativity, reactivity)
  • 5.2: Group I – Alkali Metals (properties, reactions, flame colors)
  • 5.3: Group VII – Halogens (displacement, reactivity, interhalogen reactions)
  • 5.4: Transition Metals (variable valency, complex ions, catalysts, colored compounds)

Unit 6: Energetics & Thermochemistry

  • 6.1: Exothermic vs Endothermic Reactions (energy profile diagrams)
  • 6.2: Enthalpy Changes (ΔH, standard enthalpies of formation & combustion)
  • 6.3: Hess’s Law & Bond Energies (calculations using bond enthalpies)
  • 6.4: Calorimetry (experimental enthalpy measurement, errors, improvements)

Unit 7: Chemical Reactions & Rates

  • 7.1: Types of Reactions (redox, displacement, decomposition)
  • 7.2: Acids, Bases & Salts (neutralization, pH scale, indicators, titrations)
  • 7.3: Rates of Reaction (temperature, concentration, catalysts, surface area)
  • 7.4: Collision Theory & Activation Energy (catalysis, Maxwell–Boltzmann distribution)

Unit 8: Electrochemistry

  • 8.1: Electrolysis of Molten Compounds (NaCl, PbBr₂)
  • 8.2: Electrolysis of Aqueous Solutions (CuSO₄, water, brine)
  • 8.3: Electroplating & Industrial Applications
  • 8.4: Redox Reactions & Electrochemical Cells

Unit 9: Organic Chemistry

  • 9.1: Hydrocarbons (alkanes, alkenes, alkynes – reactions & uses)
  • 9.2: Alcohols & Carboxylic Acids (preparation, reactions, esterification)
  • 9.3: Esters & Polymers (addition & condensation polymers, biodegradability)
  • 9.4: Macromolecules (proteins, carbohydrates, fats, DNA basics)
  • 9.5: Isomerism (structural, geometric, optical – extension for advanced learners)

Unit 10: Air, Water & Environment

  • 10.1: Composition of Air (O₂, N₂, noble gases, pollutants)
  • 10.2: Water Treatment & Pollution (chlorination, desalination, eutrophication)
  • 10.3: Greenhouse Gases & Climate Change (CO₂, methane, consequences)
  • 10.4: Acid Rain (causes, effects, prevention)

Unit 11: Industrial Chemistry

  • 11.1: Haber Process (production of ammonia, conditions, fertilizer use)
  • 11.2: Contact Process (sulfuric acid manufacture, conditions, uses)
  • 11.3: Extraction of Metals (blast furnace for iron, electrolysis of aluminum)
  • 11.4: Industrial Polymers (plastics, recycling, environmental impact)

Unit 12: Practical & Exam Skills

  • 12.1: Planning Investigations (hypotheses, variables, controls)
  • 12.2: Data Handling (tables, graphs, error analysis, percentage yield)
  • 12.3: Structured Question Practice (multi-step calculations, word equations, ionic equations)
  • 12.4: Multiple Choice Exam Practice (speed, elimination, interpretation of data)