CBSE CLASS XI SYLLABUS FOR CHEMISTRY
CBSE CLASS XI SYLLABUS CHEMISTRY
CBSE CLASS XI SYLLABUS CHEMISTRY-The senior secondary stage in high school is a very important phase in a student’s life as it prepares you for the career and future ahead. For class XI the kind of syllabus prepared is the first step towards higher secondary examinations. This is the level where content oriented courses are being introduced to students.Chemistry subject is opted by students who plan to take up medicine,engineering,technology.For Chemistry class XI syllabus for CBSE which deals with the basic concepts and facts of Chemistry thus exposing students to the new areas emerging in Chemical science and technology. Motivate students to take up chemistry as a discipline.
Unit I: Basic Concepts of Chemistry
Importance and scope of chemistry,concept of elements, atoms and molecules,nature of matter, laws of chemical combination ,atomic and molecular masses, mole concept and molar mass, percentage composition, empirical
and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry.
Unit II: Structure of Atom
Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars. Thomson’s model and its limitations. Rutherford’s model and its limitations, Bohr’s model and its limitations,concept of shells and subshells, dual nature of matter and light, de Broglie’s relationship,Heisenberg uncertainty principle, concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals.
Unit III: Classification of Elements and Periodicity in Properties
Significance of classification, brief history of the development of periodic table, modern periodic law and the present form of periodic table, periodic trends in properties of elements.
Unit IV: Chemical Bonding and Molecular structure
Valence electrons, ionic bond, covalent bond, bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization, involving s,p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules(qualitative idea only), hydrogen bond.
Unit V: States of Matter: Gases and Liquids
Intermolecular interactions, types of bonding, melting and boiling points,three states of matter,Boyle’s law, Charles law, Gay Lussac’s law, Avogadro’s law, ideal behaviour, empirical derivation of gas equation, Avogadro’s number,
ideal gas equation. Deviation from ideal behaviour, liquefaction of gases, critical temperature, kinetic energy and molecular speeds , Liquid State- vapour pressure, viscosity and surface tension.
Unit VI: Chemical Thermodynamics
Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions,first law of thermodynamics , second law of thermodynamics ,Introduction of entropy as a state function,Third law of thermodynamics.
Unit VII: Equilibrium
Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium, ionization of acids and bases, strong and weak electrolytes, degree of ionization,ionization of poly basic acids, acid strength, concept of pH, Henderson Equation, hydrolysis of
salts, buffer solution, solubility product, common ion effect.
Unit VIII: Redox Reactions
Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, , applications of redox reactions.
Unit IX: Hydrogen
Position of hydrogen in periodic table, occurrence, isotopes, preparation, properties and uses of hydrogen, hydrides-ionic covalent and interstitial; physical and chemical properties of water, hydrogen peroxide -preparation, reactions and structure and use; hydrogen as a fuel.
Unit X: s-Block Elements (Alkali and Alkaline Earth Metals)
General introduction, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties ,trends in chemical reactivity with oxygen, water,
hydrogen and halogens, uses,biological importance of Sodium and Potassium,Calcium Oxide and Calcium Carbonate and their industrial uses, biological importance of Magnesium and Calcium.
Unit XI: Some p -Block Elements
Group 13 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous properties of first element of the group, Boron – physical and chemical properties, some important compounds, Borax, Boric acid, Boron Hydrides, Aluminium: Reactions with acids and alkalies, uses.
Group 14 Elements: General introduction, electronic configuration, occurrence, variation of properties, oxidation states, trends in chemical reactivity, anomalous behaviour of first elements. Carbon-catenation, allotropic forms, physical and chemical properties; uses of some important compounds: oxides. Important compounds of Silicon and a few uses: Silicon Tetrachloride, Silicones, Silicates and Zeolites, their uses.
Unit XII: Organic Chemistry -Some Basic Principles and Technique
General introduction, methods of purification, qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electromeric effect, resonance and hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.
Unit XIII: Hydrocarbons
Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion and pyrolysis.
Alkenes – Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation, chemical reactions: addition of hydrogen, halogen, water, hydrogen halides (Markownikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.
Alkynes – Nomenclature, structure of triple bond (ethyne), physical properties, methods of
preparation, chemical reactions: acidic character of alkynes, addition reaction of – hydrogen,
halogens, hydrogen halides and water.
Aromatic Hydrocarbons: Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties: mechanism of electrophilic substitution. Nitration, sulphonation, halogenation, Friedel Craft’s alkylation and acylation, directive influence of functional group in monosubstituted benzene. Carcinogenicity and toxicity.
Unit XIV: Environmental Chemistry
Environmental pollution – air, water and soil pollution, chemical reactions in atmosphere, smog, major atmospheric pollutants, acid rain, ozone and its reactions, effects of depletion of ozone layer, greenhouse effect and global warming- pollution due to industrial wastes, green chemistry as an alternative tool for reducing pollution, strategies for control of environmental pollution.
Books for Chemistry Class XI
- NCERT CHEMISTRY PART I FOR CLASS 11
Average2Excellent CD Class XI Chemistry – CBSE Board
15 Sample Question Papers Chemistry Class 11th CBSE Paperback by
4) J D LEE, Solomons Fryhle, Fundamentals of Chemistry (Text book), Class 11 by Wiley India Pvt Ltd
All the best students !
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