AP EAMCET Chemistry Syllabus 2026 – Chapters, Weightage & Pattern

Topics

Sub Topics

ATOMIC STRUCTURE

Subatomic particles; Atomic models; Developments to Bohr’s model; Wave–particle duality; Planck’s quantum theory; Atomic spectra; Bohr’s model of hydrogen; Limitations of Bohr’s model; Quantum mechanical model of atom; Dual behavior of matter; Heisenberg’s uncertainty principle; Quantum mechanical features; Orbitals and quantum numbers; Shapes and energies of orbitals; Aufbau Principle; Pauli’s exclusion principle; Hund’s rule; Electronic configurations; Stability of half‑filled and completely filled orbitals

CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

Genesis of periodic classification; Modern periodic law and periodic table; Nomenclature of elements beyond atomic number 100; Electronic configurations and s-, p-, d-, f‑block elements; Periodic trends in physical properties (atomic radius, ionic radius, size variation in inner transition elements, ionization enthalpy, electron gain enthalpy, electronegativity); Chemical periodic trends (valence/oxidation states; anomalous properties of second-period elements; periodic trends and reactivity)

CHEMICAL BONDING AND MOLECULAR STRUCTURE

Kossel–Lewis bonding approach; Octet rule and Lewis structures; Formal charges; Limitations of octet rule; Ionic bonding; Crystal structure of NaCl; Lattice enthalpy; Bond parameters (length, angle, enthalpy, order, resonance, dipole moment); Fajan’s rules; VSEPR theory; Molecular geometry; Valence bond theory; Orbital overlap; σ and π bonds; Hybridization (s, p, d); Coordinate bonding; Molecular orbital theory (LCAO, orbital combination conditions, MO types, energy-level diagrams); Bonding in H₂, He₂, Li₂, B₂, C₂, N₂, O₂; Hydrogen bonding

STATES OF MATTER: GASES AND LIQUIDS

Intermolecular forces vs thermal energy; Gas laws; Ideal gas equation; Graham’s law of diffusion; Dalton’s law of partial pressures; Kinetic molecular theory; Speed distributions; Real gas behavior; Liquefaction; Liquid state—vapour pressure, surface tension, viscosity

STOICHIOMETRY

Significant figures; Laws of chemical combination (conservation of mass, definite and multiple proportions); Mole concept and molar mass; Equivalent weight; Empirical and molecular formula calculations; Limiting reagent; Concentration units (mass %, mole fraction, molarity, molality, normality); Redox reactions—electron transfer, oxidation numbers; Types of redox reactions; Balancing redox (oxidation number method, half‑reaction method); Redox titrimetry

HYDROGEN AND ITS COMPOUNDS

Position of hydrogen; Occurrence and isotopes; Preparation and properties of H₂; Uses of hydrogen; Ionic, covalent, and non‑stoichiometric hydrides; Water—physical properties, structure, hardness; Hydrogen peroxide—preparation, properties, structure, storage, uses; Heavy water; Hydrogen as a fuel

THE s‑BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS)

Group 1 and Group 2 elements; Electronic configurations; Atomic and ionic radii; Ionization and hydration enthalpies; Physical and chemical properties; Uses; Compounds (oxides, halides, oxo salts); Lithium’s anomalous behavior and its similarities with magnesium; Sodium compounds (NaCl, Na₂CO₃, NaOH, NaHCO₃); Biological roles of Na, K, Ca, Mg

p‑BLOCK ELEMENTS – GROUP 13 (BORON FAMILY)

Electronic configuration; Atomic radius; Ionization enthalpy; Electronegativity; Physical and chemical properties; Boron’s anomalous trends; Compounds—borax, orthoboric acid, diborane; Uses of boron, aluminum, and their compounds

p‑BLOCK ELEMENTS – GROUP 14 (CARBON FAMILY)

Electronic configuration; Atomic radius; Ionization enthalpy; Electronegativity; Physical and chemical properties; Allotropes of carbon; Uses of carbon; Compounds—CO, CO₂, silica, silicones, silicates, zeolites

ENVIRONMENTAL CHEMISTRY

Definitions: air, water, soil pollution; Environmental pollution and its types; Acid rain; Particulate and stratospheric pollution; Water and soil pollution; Pollution control strategies; Green chemistry

ORGANIC CHEMISTRY – BASIC PRINCIPLES AND HYDROCARBONS

Carbon’s tetravalency; Structural representations; Classification; Nomenclature; Isomerism; Reaction mechanisms; Bond fission (homolytic/heterolytic); Nucleophiles and electrophiles; Electron displacement effects (inductive, resonance, electromeric, hyperconjugation); Types of organic reactions; Purification methods; Elemental analysis (qualitative and quantitative); Hydrocarbons—classification; Alkanes (nomenclature, isomerism, preparation, properties, reactions including halogenation, oxidation, polymerization), Alkenes (structure, isomerism, preparation, addition reactions with mechanisms such as Markovnikov, anti‑Markovnikov), Alkynes (nomenclature, structure, preparation, acidic behavior, addition/polymerization), Aromatic hydrocarbons (benzene—structure, resonance, electrophilic substitution reactions like nitration, sulfonation, halogenation, Friedel–Crafts alkylation/acylation; directive influence; toxicity and carcinogenicity)

SOLID STATE

Solid-state characteristics; Amorphous vs crystalline solids; Crystal classification by bonding; X-ray crystallography; Bravais lattices and unit cells; Atom count per unit cell; Close-packed structures; Tetrahedral and octahedral voids; Packing efficiency in SC, BCC, HCP, CCP; Unit cell dimension and density calculations; Point defects (stoichiometric and non‑stoichiometric); Electrical (conductors, semiconductors, insulators) and magnetic properties

SOLUTIONS

Types of solutions; Concentration expressions (mass, volume, ppm, mole fraction, molarity, molality); Solubility (solid in liquid, gas in liquid); Henry’s law; Vapour pressure of solutions; Raoult’s and ideal/non‑ideal behavior; Colligative properties and molar mass determination; Abnormal molar mass and van’t Hoff factor

ELECTROCHEMISTRY AND CHEMICAL KINETICS

Electrochemistry: Electrochemical and galvanic cells; Nernst equation; Cell reaction Gibbs energy; Electrolytic conductance; Kohlrausch’s law; Faraday’s laws; Batteries; Fuel cells; Metal corrosion; Hydrogen economy. Chemical Kinetics: Reaction rates; Integrated rate equations; Pseudo-first-order kinetics; Collision theory

SURFACE CHEMISTRY

Adsorption vs absorption; Adsorption mechanisms and types; Applications; Catalysis (homogeneous and heterogeneous, promoters, adsorption theory, solid catalysts); Colloids (classification; Tyndall effect; Brownian movement; electrophoresis; coagulation)

GENERAL PRINCIPLES OF METALLURGY

Occurrence of metals; Ore concentration (levigation); Extraction techniques (oxide conversion, reduction, metal extraction); Thermodynamic and electrochemical metallurgy principles; Oxidation and reduction

p‑BLOCK ELEMENTS – GROUPS 15 to 18

Group-wise coverage: Group 15 (N, P) – properties, ammonia, nitric acid, phosphine, oxoacids; Group 16 (O, S) – properties, ozone, sulfur oxoacids, sulfuric acid; Group 17 (halogens) – properties, oxoacids, interhalogen compounds; Group 18 (noble gases) – xenon compounds (XeF₂, XeF₄, XeF₆, XeO₃, XeOF₄)

d‑ AND f‑BLOCK ELEMENTS & COORDINATION COMPOUNDS

Transition metals – trends, properties, colored ions, alloys, applications; Lanthanoids and actinoids; Coordination chemistry – Werner’s theory; Nomenclature; Isomerism; Bonding theories (VBT, CFT); Crystal field splitting; Metal carbonyls

POLYMERS

Polymer classification; Polymerization mechanisms; Commercial polymers (polyethylene, Teflon, nylon, Bakelite, etc.); Biodegradable polymers; Molecular mass and polydispersity index

BIOMOLECULES

Carbohydrates: structure and classification; Amino acids; Proteins (structure levels); Enzymes; Vitamins; Nucleic acids; Hormones

CHEMISTRY IN EVERYDAY LIFE

Drug classification (pharmacological and chemical); Drug–target interactions; Therapeutic actions (antacids, analgesics, antimicrobials, antifertility agents); Food chemicals; Cleansing agents; Detergents

HALOALKANES AND HALOARENES

Nomenclature; Preparation; Physical properties; Reactions (nucleophilic substitution, elimination); Environmental impact of polyhalogen compounds

ORGANIC COMPOUNDS CONTAINING C, H AND O

Alcohols, phenols, ethers—nomenclature, preparation, reactions (oxidation, dehydration, electrophilic substitution); Aldehydes, ketones, carboxylic acids—structure, nomenclature, preparation, properties, reactions, uses

ORGANIC COMPOUNDS CONTAINING NITROGEN

Amines—classification, preparation, reactions, synthesis; Diazonium salts, cyanides, isocyanides—preparation, properties, synthetic applications

Unit

Topics Covered

Surface Chemistry

Adsorption vs absorption; adsorption mechanisms and isotherms; applications; catalysis (catalysts, promoters, poisons, homogeneous and heterogeneous catalysis, adsorption theory, selectivity, shape-selective catalysis, enzyme catalysis, industrial catalysts); colloids (classification, Tyndall effect, Brownian movement, electrophoresis, coagulation, applications).

General Principles of Metallurgy

Occurrence of metals; ore concentration methods (levigation, flotation); extraction: conversion to oxides, reduction to metal; thermodynamic principles including Ellingham diagrams; electrochemical metallurgy; refining methods (distillation, liquation, poling, electrolysis, zone, and vapour-phase refining); uses of Al, Cu, Zn, and Fe.

p‑Block Elements (Groups 15–18)

Group 15: N & P – electronic configuration, radii, ionization enthalpy, electronegativity, properties; dinitrogen, ammonia, nitrogen oxides, nitric acid, phosphorus (allotropes), phosphine, phosphorus halides, oxoacids. Group 16: O & S – properties, preparation and uses; oxides; ozone; sulfur (allotropes, dioxide, oxoacids), sulfuric acid. Group 17: halogens – electronic configuration, properties, chlorine, HCl, oxoacids, interhalogen compounds. Group 18: noble gases – properties; xenon compounds (XeF₂, XeF₄, XeF₆, XeO₃, XeOF₄): preparation, structure, uses.

d‑ and f‑Block Elements & Coordination Compounds

d and f block: periodic position; electronic configurations; transition element properties (size, ionization, oxidation states, electrode potential trends, colored ions, magnetism, complex formation, catalysis, alloys); important compounds (oxides, permanganate, chromate structures); lanthanoids and actinoids properties and applications. Coordination compounds: Werner’s theory; IUPAC nomenclature; isomerism (stereoisomerism, structural); bonding theories (VBT & CFT), crystal field splitting, color, limitations, metal carbonyls, stability, applications.

Polymers

Polymer classification (source, structure, polymerization type); addition (chain growth) polymerization – mechanisms, examples (polythene, Teflon, PAN); condensation (step growth) polymerization – Nylon‑6,6, Nylon‑6, Terylene, Bakelite, melamine–formaldehyde; copolymerization; rubber (natural, vulcanization, synthetic – neoprene, Buna‑N); molecular mass (number-average, weight-average), polydispersity index; biodegradable polymers (PHBV, Nylon‑2‑Nylon‑6); commercially important polymers (polypropylene, polystyrene, PVC, urea‑formaldehyde resin, glyptal, Bakelite).

Biomolecules – Carbohydrates, Proteins, Vitamins, Enzymes, Nucleic Acids, Hormones

Carbohydrates: classification, glucose (structure, D/L, optical activity), fructose, sucrose, maltose, lactose, starch, cellulose, glycogen. Amino acids: classification, structures, zwitterions. Proteins: fibrous vs globular; primary–quaternary structure; denaturation. Enzymes: mechanism of action. Vitamins: names, classification, sources, deficiency diseases. Nucleic acids: composition, structure, functions, DNA fingerprinting. Hormones: types, production, activity, disorders.

Chemistry in Everyday Life

Drugs: classification by pharmacological effect, action, structure, molecular targets; drug–target interactions (enzyme and receptor targeting); therapeutic categories (antacids, antihistamines, tranquilizers, analgesics, antimicrobials, antifertility drugs); food chemicals (artificial sweeteners, preservatives, antioxidants); cleansing agents (soaps, synthetic detergents).

Haloalkanes and Haloarenes

Classification and nomenclature; C–X bond nature; preparation methods (free radical halogenation, electrophilic substitution, diazonium replacement, addition to alkenes, Finkelstein reaction); physical properties; chemical reactions (SN2, SN1 – stereochemistry, elimination, metal reactions) for haloalkanes; haloarenes – nucleophilic and electrophilic substitutions, metal reactions; polyhalogen compounds (e.g. dichloromethane, chloroform, iodoform, carbon tetrachloride, freons, DDT) – uses and environmental effects.

Organic Compounds Containing C, H and O

Alcohols, Phenols, Ethers: classification, nomenclature, structure; preparation methods (from alkenes, carbonyls, haloarenes, etc.); physical and chemical properties; reactions (acidic behavior, esterification, dehydration, oxidation, electrophilic substitution, Kolbe’s and Reimer–Tiemann reactions). Aldehydes & Ketones: nomenclature, structure; preparation (oxidation of alcohols, acyl chlorides, nitriles, esters); properties; reactions (addition, oxidation, reduction, α‑hydrogen reactions, Cannizzaro, electrophilic substitutions); uses. Carboxylic Acids: nomenclature, structure; preparation (from alcohols, benzene, nitriles, Grignards, acyl derivatives); properties; reactions (acidity, esterification, decarboxylation, halogenation); uses.

Organic Compounds Containing Nitrogen

Amines: classification, nomenclature, preparation methods (reduction of nitro compounds, ammonolysis, reduction of nitriles, amides; Gabriel and Hoffmann syntheses); physical and chemical properties (basicity, alkylation, acylation, Carbylamine reaction, diazotization, reactions with sulfonyl chlorides, electrophilic substitution of aniline).

Chapter Name

% Weightage

Basic Concepts of Chemistry

12.50%

States of Matter & Thermodynamics

8.33%

Physical & Chemical Equilibrium

10.00%

Chemical Kinetics & Electrochemistry

8.33%

5. Organic Chemistry – Fundamentals

10.00%

6. Hydrocarbons & Functional Groups

20.83%

7. Biomolecules, Polymers & Daily-Life Chemistry

6.67%

8. Inorganic Periodicity & s-p-d-f Blocks

17.50%

9. Coordination Compounds & Metallurgy

5.83%