Classes

Chemistry Notes For Class 11

Chemistry Notes For Class 12

Class 11 Chemistry Topics :-

Chapter 1: SOME BASIC CONCEPTS OF CHEMISTRY :

• understand and appreciate the role of chemistry in different spheres of life

• explain the characteristics of three states of matter

• classify different substances into elements, compounds and mixtures

• define SI base units and list some commonly used prefixes

• use scientific notations and perform simple mathematical operations on numbers

• differentiate between precision and accuracy

• determine significant figures • convert physical quantities from one system of units to another

• explain various laws of chemical combination

• appreciate significance of atomic mass, average atomic mass, molecular mass and formula mass

• describe the terms – mole and molar mass

• calculate the mass per cent of different elements constituting a compound

• determine empirical formula and molecular formula for a compound from the given experimental data

• perform the stoichiometric calculations.

Chapter 2 STRUCTURE OF ATOM :

know about the discovery of electron, proton and neutron and their characteristics

• describe Thomson, Rutherford and Bohr atomic models

• understand the important features of the quantum mechanical model of atom

• understand nature of electromagnetic radiation and Planck’s quantum theory

• explain the photoelectric effect and describe features of atomic spectra

• state the de Broglie relation and Heisenberg uncertainty principle

• define an atomic orbital in terms of quantum numbers

• state aufbau principle, Pauli exclusion principle and Hund’s rule of maximum multiplicity

• write the electronic configurations of atoms.

Chapter 3 :CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES :

• appreciate how the concept of grouping elements in accordance to their properties led to the development of Periodic Table.

• understand the Periodic Law; • understand the significance of atomic number and electronic
configuration as the basis for periodic classification

• name the elements with Z >100 according to IUPAC nomenclature

• classify elements into s, p, d, f blocks and learn their main characteristics;

• recognise the periodic trends in physical and chemical properties of elements;

• compare the reactivity of elements and correlate it with their occurrence in nature;

• explain the relationship between ionization enthalpy and metallic character;

• use scientific vocabulary appropriately to communicate ideas related to certain important properties of atoms e.g., atomic/ionic radii, ionization enthalpy, electron gain enthalpy, electronegativity,  valence of elements.

Chapter 4 : CHEMICAL BONDING AND MOLECULAR STRUCTURE :

understand KÖssel-Lewis approach to chemical bonding

• explain the octet rule and its limitations, draw Lewis structures of simple molecules

• explain the formation of different  types of bonds

• describe the VSEPR theory and predict the geometry of simple molecules

• explain the valence bond approach for the formation of covalent bonds

• predict the directional properties of covalent bonds

• explain the different types of hybridisation involving s, p and d orbitals and draw shapes of
simple covalent molecules

• describe the molecular orbital theory of homonuclear diatomic molecules

• explain the concept of hydrogen bond.