Chemistry Theory Notes
Theory Notes for every A/L Chemistry topic · Aligned with the NIE syllabus
14 topics, in the order the syllabus teaches them · Year 1 · Year 2
All Topics
Year 1
Atomic Structure
Atoms consist of three fundamental subatomic particles: protons (positive charge), neutrons (neutral), and electrons (negative charge).
Structure and Bonding
Chemical bonding arises from the electrostatic interactions between valence electrons and atomic nuclei, driving atoms toward stable…
Chemical Calculations
Chemical calculations apply stoichiometric mole relationships, empirical and molecular formulas, concentration expressions, and limiting…
Gaseous State of Matter
The gaseous state is governed by kinetic molecular theory, ideal gas laws (Boyle's, Charles's, Avogadro's, Dalton's), and deviations seen…
Energetics
Chemical energetics studies enthalpy changes (ΔH), Hess's law cycles, lattice energy (Born-Haber cycles), entropy (ΔS), and Gibbs free…
Chemistry of s, p, and d Block Elements
The periodic properties and chemical reactivity of s, p, and d block elements correlate directly with their valence electron…
Basic Concepts of Organic Chemistry
Organic chemistry is grounded in carbon atom hybridization (sp³, sp², sp), spatial geometry, IUPAC functional group precedence, and…
Hydrocarbons and Halohydrocarbons
The reactivity of aliphatic and aromatic hydrocarbons centers on electrophilic addition to unsaturated pi-bonds, electrophilic aromatic…
Oxygen-Containing Organic Compounds
Oxygenated organic functional groups (alcohols, phenols, carbonyls, carboxylic acids) are defined by the acidity of the O-H bond, the…
Nitrogen-Containing Organic Compounds
Nitrogen-containing compounds (amines, amides, diazonium salts) derive their chemical behavior from the nucleophilicity and basicity of the…
Year 2
Reaction Kinetics
Reaction kinetics governs the empirical rate of chemical transformations and the energetic pathway (activation energy Ea and rate equation…
Chemical Equilibrium
Dynamic chemical equilibrium is achieved in a closed system when forward and backward reaction rates are equal, keeping macroscopic…
Electrochemistry
Electrochemistry encompasses the interconversion of chemical and electrical energy via redox couples across galvanic cells (spontaneous,…
Industrial Chemistry and Environmental Pollution
Industrial chemistry encompasses the large-scale manufacture of essential chemicals (ammonia via Haber-Bosch, sulfuric acid via Contact…
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