CBSE Class 11 Chemistry Syllabus 2020-2021: Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy. To prepare correctly for CBSE 11th Chemistry Exam, you must have the latest CBSE Class 11 Chemistry Syllabus and exam pattern.
In this article, we are providing a complete guide on CBSE chemistry class 11 Syllabus 2020-2021. You can easily check the CBSE Class 11 Chemistry syllabus and download PDF from the article below.
NEW CBSE Class 11 Chemistry Syllabus 2021
Chemistry is an important subject for CBSE Science Stream. It is an essential subject for those students who want to pursue a Chemical engineering or a medical degree. You should have a clear concept in CBSE Class 11 Chemistry to score better grades in the exam. You should have a depth concept on Class 11 and Class 11 Chemistry to score better marks in the various entrance exam.
You already know CBSE updates its syllabus almost every year to provide the students the latest syllabus. Here you can check CBSE new syllabus for Class 11 Chemistry and NCERT Textbook based on the latest syllabus
CBSE Class 11 Chemistry Syllabus 2021 and Exam Pattern
|I||Basic Concepts of Chemistry||11|
|II||Structure of Atom|
|III||Classification of Elements & Periodicity in Properties||04|
|IV||Chemical Bonding and Molecular Structure||21|
|V||States of Matter: Gases and Liquids|
|XI||Some p-Block Elements|
|XII||Organic Chemistry: Basic Principles & Techniques||18|
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Detailed CBSE 11th Chemistry Syllabus 2021
The syllabus consists of 14 units:
- (i) Basic Concepts of Chemistry,
- (ii) Structure of Atom,
- (iii) Classification of Elements & Periodicity in Properties,
- (iv) Chemical Bonding and Molecular Structure,
- (v) States of Matter,
- (vi) Thermodynamics,
- (vii) Equilibrium,
- (viii) Redox Reactions,
- (ix) Hydrogen,
- (x) s-Block Elements,
- (xi) Some p-Block Elements,
- (xii) Basic Organic Chemistry,
- (xiii) Hydrocarbons, and
- (xiv) Environmental Chemistry.
Unit I: Some Basic Concepts of Chemistry
- General Introduction: Importance and scope of chemistry.
- Nature of matter, laws of chemical combination, Dalton’s atomic theory: concept of elements, atoms and molecules.
- 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 – Aufbau principle, Pauli’s exclusion principle and Hund’s rule, electronic configuration of atoms, stability of half filled and completely filled 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 -atomic radii, ionic radii, inert gas radii Ionization enthalpy, electron gain enthalpy, electronegativity, valency. Nomenclature of elements with atomic number greater than 100.
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
- Three states of matter, intermolecular interactions, types of bonding, melting and boiling points, role of gas laws in elucidating the concept of the molecule, 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 (elementary idea)Liquid State- vapour pressure, viscosity and surface tension (qualitative idea only, no mathematical derivations)
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 -internal energy and enthalpy, heat capacity and specific heat, measurement of ΔU and ΔH, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution. Second law of Thermodynamics (brief introduction)
- Introduction of entropy as a state function, Gibb’s energy change for spontaneous and non-spontaneous processes, criteria for equilibrium.
- Third law of thermodynamics (brief introduction).
Unit VII: Equilibrium
- Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier’s principle, ionic 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 (elementary idea), buffer solution, solubility product, common ion effect (with illustrative examples).
Unit VIII: Redox Reaction
- Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, in terms of loss and gain of electrons and change in oxidation number, 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, heavy water, hydrogen peroxide -preparation, reactions and structure and use; hydrogen as a fuel.
Unit X: s -Block Elements (Alkali and Alkaline Earth Metals)
- Group 1 and Group 2 Elements
- General introduction, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens, uses.
- Preparation and Properties of Some Important Compounds:
- Sodium Carbonate, Sodium Chloride, Sodium Hydroxide and Sodium Hydrogencarbonate, 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
- General Introduction to 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
- Classification of Hydrocarbons
- Aliphatic 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.
Other Important Links Related to CBSE 11th Chemistry
Here you can check links to various study materials related to the 11th Chemistry
CBSE NCERT Textbook For Class 11 Chemistry 2021 PDF
NCERT Chemistry book has two parts. It is a perfect choice if you want to attempt any competitive exams like JEE, NEET, etc.
This book will provide you a detailed explanation on every topic. So you can easily develop a depth concept. Here you can see the detailed explanation with the combination of diagrams and theoretical concepts.
You can download complete Class 11 Chemistry Books in Hindi and English Medium from the links below.
We have covered the detailed guide on CBSE Class 11 Chemistry Syllabus 2019-20. Feel free to ask any questions related to CBSE Class 11 Chemistry in the comment section below.
FAQ: CBSE Class 11 Chemistry Syllabus
Is class 11th chemistry syllabus tough?
It is one of the easiest but highly scoring chapters of Class 11 Chemistry. In order to prepare Inorganic Chemistry you just need a very sharp memory because it involves lots of learning.
What is the hardest topic in chemistry?
Most of the time the difficult topics in chemistry are General organic chemistry, Ionic and Chemical equilibrium, thermodynamics, nuclear physics, and electrochemistry.
Is there any change in CBSE 11th syllabus 2020-21?
This year, CBSE has reduced the syllabus for Class 11 for all subjects by up to 30% because of the disruption caused by the COVID-19.
What is the latest Class 11 Chemistry Syllabus?
You can refer to the above article to the latest Class 11 Chemistry Syllabus.
How many Units are there in Class 11 Chemistry?
There are XIV Units in Class 11 Chemistry.