what are important in chemistry 1 lesson
Answers
Answer:
Important Name Reactions in CBSE & JEE: Complete Analysis.
Unit 1: Solid State –
Unit 3: Electrochemistry -
Unit 4: Chemical Kinetics -
Unit 5: Surface Chemistry -
Unit 6: General Principles and Processes of Isolation of Elements -
Unit 7: p Block Elements -
Unit 8: d and f Block Elements -
Explanation:
Important topics for CBSE Class 11 Chemistry annual exam 2020 are available here. These topics are mentioned in the latest CBSE Class 11 Chemistry Syllabus and Class 11 Chemistry NCERT Textbooks. Questions based on these topics have been frequently asked in previous CBSE Class 11 Chemistry question papers.
⇒CBSE Class 11 Chemistry Syllabus 2020
CBSE Class 11 Chemistry Exam 2020: Chapter-wise Important Topics
Important Topics of Class 11 Chemistry: Chapter 1 - Some Basic Concepts of Chemistry
- Laws of chemical combination
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- Dalton's atomic theory: concept of elements, atoms and molecules.
- Atomic and molecular masses,
- Mole concept and molar mass (Very Important)
- Empirical and molecular formula
- Stoichiometry & calculations based on stoichiometry (Very Important)
Important Topics of Class 11 Chemistry: Chapter 2 - Structure of Atom
- Bohr's model and its limitations (Very Important)
- Concept of shells and subshells,
- Dual nature of matter and light,
- de Broglie's relationship (Very Important)
- Heisenberg uncertainty principle (Very Important)
- concept of orbitals, quantum numbers, shapes of s, p and d orbitals
- rules for filling electrons in orbitals - Aufbau principle (Very Important)
- Pauli's exclusion principle and Hund's rule, electronic configuration of atoms,
- Stability of half-filled and completely filled orbitals
Chapter III: Classification of Elements and Periodicity in Properties
- 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
Chapter IV: Chemical Bonding and Molecular structure
- Valence electrons, ionic bond, covalent bond (Very Important)
- Bond parameters
- Lewis structure
- Polar character of covalent bond
- Covalent character of ionic bond
- Valence bond theory (Very Important)
- Resonance
- Geometry of covalent molecules (Very Important)
- VSEPR theory
- Concept of hybridization, involving s, p and d orbitals and shapes of some simple molecules (Very Important)
- Molecular orbital theory of homonuclear diatomic molecules (qualitative idea only)
- Hydrogen bond (Very Important)
Chapter V: States of Matter: Gases and Liquids
- Intermolecular interactions
- Types of bonding, melting and boiling points
- Boyle's law, Charles law, Gay Lussac's law
- Role of gas laws in elucidating the concept of the molecule
- Avogadro's law (Very Important)
- Ideal behaviour
- Empirical derivation of gas equation
- Avogadro's number (Very Important)
- Ideal gas equation (Very Important)
- Deviation from ideal behaviour (Very Important)
- Liquefaction of gases
- Critical temperature (Very Important)
- Kinetic energy and molecular speeds (Very Important)
- Liquid State: vapour pressure, viscosity and surface tension (Very Important)
Chapter VI: Chemical Thermodynamics
- Concepts of System and types of systems,
- Work, heat, energy (Very Important)
- Extensive and intensive properties (Very Important)
- 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