NCERT 11th class science notes

Basic Concepts of Chemistry in 11th class cover fundamental principles. Matter is composed of atoms and molecules. The atomic structure consists of protons, neutrons, and electrons. The periodic table categorizes elements based on atomic number and properties. Chemical reactions involve the rearrangement of atoms, obeying the law of conservation of mass. Stoichiometry calculates reactant and product quantities. Chemical bonding forms compounds through ionic, covalent, or metallic bonds. States of matter include solids, liquids, and gases. Thermodynamics studies energy changes in reactions. Kinetics explores reaction rates. Equilibrium deals with balanced reactions. Acids and bases have pH values. Organic chemistry focuses on carbon compounds. These basics form the foundation of chemistry understanding.