Chemistry (CHEM)
7 units: Some Basic Concepts of Chemistry, Structure of Atom, Classification of Elements and Periodicity in Properties, Chemical Bonding and Molecular Structure, States of Matter — Solids and Gases.
Detailed syllabus
Unit 1: Some Basic Concepts of Chemistry (7 hours, 3 marks)
Laws of chemical combination; elements, atoms and molecules; atomic and molecular masses; mole concept and molar mass; percentage composition, empirical and molecular formula; chemical reactions, stoichiometry and calculations; concentration terms of solutions.
Unit 2: Structure of Atom (12 hours, 6 marks)
Bohr's model and its limitations, shells and sub-shells, dual nature of matter and light, de Broglie's relationship, Heisenberg uncertainty principle, Schrödinger wave equation (elementary), orbitals, quantum numbers, shapes of s, p and d orbitals, Aufbau principle, Pauli exclusion principle, Hund's rule, exchange energy, electronic configuration, stability of half-filled and filled orbitals.
Unit 3: Classification of Elements and Periodicity in Properties (7 hours, 4 marks)
Modern periodic law and periodic table, periodic trends: atomic, ionic and van der Waals radii, ionisation enthalpy, electron gain enthalpy, electronegativity, valency; nomenclature of elements with atomic number above 100.
Unit 4: Chemical Bonding and Molecular Structure (13 hours, 6 marks)
Valence electrons, ionic bond, bond parameters, covalent bond, Lewis structures, polar character of covalent bonds, covalent character of ionic bonds, valence bond theory, resonance, VSEPR theory, hybridisation involving s, p and d orbitals, intermolecular interactions, hydrogen bonding, molecular orbital theory of homonuclear diatomic molecules (qualitative).
Unit 5: States of Matter — Solids and Gases (9 hours, 4 marks)
Classification of solids, amorphous and crystalline solids, unit cells in 2D and 3D lattices, packing efficiency, density of a unit cell, voids, atoms per unit cell, point defects. Kinetic theory of gases, molecular speeds, Dalton's law, Graham's law, deviation from ideal behaviour, van der Waals equation, liquefaction of gases, critical temperature.
Unit 6: s-Block Elements (Groups 1 and 2) (10 hours, 5 marks)
Electronic configuration, occurrence, trends in properties (ionisation enthalpy, atomic and ionic radii), reactivity with oxygen, water, hydrogen and halogens; hydrides; hydrogen peroxide; hydrogen as a fuel; biological importance of Na, K, Mg and Ca.
Unit 7: p-Block Elements (Groups 13 and 14) (12 hours, 7 marks)
General introduction, configuration, oxidation states and trends of groups 13 and 14. Boron compounds (oxides, boric acid, borates, diborane); aluminium reactions and uses, LiAlH4 and Al2O3. Carbon: catenation, allotropes, nano-carbon, graphene, CO and CO2; silicon compounds: SiCl4, silicates, zeolites.
Source: official document