Class 11 Chemistry, Part 1 (NCERT)
NCERT's Class 11 Chemistry Part 1: the basic ideas of chemistry, the structure of the atom, and how elements are classified. Then chemical bonding and molecular structure, which explain how matter behaves, and the laws of thermodynamics and equilibrium that underpin physical chemistry.
Some Basic Concepts Of Chemistry
Chapter 1
Chapter 1 · Start here
Some Basic Concepts Of Chemistry
Matter, measurement and significant figures, the mole, and how to calculate the amounts in a chemical reaction.
Sprint 1
Nature And Classification Of Matter
Classify matter by its state and by what it is made of.
Sprint 2
SI Units And Measurement
The base SI units, metric prefixes, and converting between temperature scales.
Sprint 3
Uncertainty In Measurement
Scientific notation, and the rules for significant figures in calculations.
Sprint 4
Dimensional Analysis
Convert between units using the unit factor method.
Sprint 5
Laws Of Chemical Combinations And Dalton's Theory
The laws of chemical combination, and how Dalton's atomic theory explains them.
Sprint 6
Atomic And Molecular Masses
Calculate average atomic mass, and molecular and formula mass.
Sprint 7
The Mole Concept And Molar Mass
Move between mass, moles and number of particles using Avogadro's constant.
Sprint 8
Percentage Composition And Formulas
Find a compound's empirical and molecular formulas from its percentage composition.
Sprint 9
Stoichiometry And Limiting Reagents
Use balanced equations to calculate masses, and find the limiting reagent.
Sprint 10
Reactions In Solutions
Express concentration as mass percent, mole fraction, molarity and molality, and convert between them.
Sprint 11
Review: Basic Concepts Of Chemistry
Put the whole chapter together on multi-step and mixed problems.
Structure Of Atom
Chapter 2
Chapter 2 · Start here
Structure Of Atom
From the discovery of electrons and protons to Bohr's model, quantum numbers, orbitals and electronic configurations.
Sprint 12
Discovery Of Particles & Early Models
Understand the subatomic composition of the atom and the concepts of atomic number, mass number, and isotopes.
Sprint 13
EM Radiation & Planck's Quantum Theory
Master the relationships between wavelength, frequency, and photon energy.
Sprint 14
The Photoelectric Effect
Understand the photoelectric effect and apply the conservation of energy to photons and ejected electrons.
Sprint 15
Atomic Spectra
Analyze the emission spectrum of hydrogen using the Rydberg formula.
Sprint 16
Bohr's Model For The Hydrogen Atom
Calculate energy states and orbital radii using Bohr's postulates.
Sprint 17
Towards Quantum Mechanics: Wave-Particle Duality
Apply de Broglie's wavelength equation and Heisenberg's uncertainty principle.
Sprint 18
Quantum Numbers & Orbitals
Determine valid sets of quantum numbers and understand subshell notation.
Sprint 19
Shapes & Energies Of Orbitals
Visualize orbital shapes, calculate nodes, and determine relative energies using the n+l rule.
Sprint 20
Electronic Configuration Of Atoms
Write accurate electronic configurations applying Aufbau, Pauli, and Hund's rules, including exceptions.
Sprint 21
Chapter Review
Synthesize atomic models, quantum calculations, and electron configurations.
Classification Of Elements And Periodicity In Properties
Chapter 3Chapter 3 · Start here
Classification Of Elements And Periodicity In Properties
How the periodic table was built, and why atomic size, ionisation enthalpy and electronegativity change across it.
Sprint 22
Genesis Of Periodic Classification
Understand the historical evolution leading to the Modern Periodic Law based on atomic numbers.
Sprint 23
Nomenclature Of Elements (Z > 100)
Learn and apply the IUPAC systematic nomenclature for elements with atomic number > 100.
Sprint 24
Electronic Configurations And The Periodic Table
Connect an atom's principal quantum number and valence electrons to its period and group location.
Sprint 25
Element Blocks And Types
Classify elements into s, p, d, f blocks and identify broad trends in metallic and non-metallic character.
Sprint 26
Atomic And Ionic Radii
Analyze and predict trends in atomic and ionic radii, including isoelectronic species.
Sprint 27
Ionization And Electron Gain Enthalpies
Define, predict trends, and justify anomalies for Ionization Enthalpy and Electron Gain Enthalpy.
Sprint 28
Electronegativity And Chemical Valence
Understand Electronegativity, differentiate it from EGE, and apply it to predict valence and compound formulas.
Sprint 29
Chemical Reactivity And Anomalous Properties
Explain diagonal relationships, anomalous properties of second-period elements, and trends in chemical reactivity.
Sprint 30
Chapter Review
Synthesize the periodic properties and apply them to complex analytical questions.