CBSE Class 11 Chemistry — Chapter Summary

Chemistry studies the preparation, properties, structure, and reactions of material substances. It explains matter through atoms, molecules, elements, compounds, mixtures, and the laws that govern chemical combination. The chapter also develops the language of chemistry through units, measurement, s

Redox reactions are chemical reactions in which oxidation and reduction happen at the same time. They are central to many chemical changes because electron transfer or electron shift lies at the heart of the process. Oxidation is the loss of electrons or an increase in oxidation number, while reduct

Atoms are made of smaller particles, and their internal structure explains chemical behaviour, spectra, and bonding. The chapter traces the move from Dalton’s indivisible atom to modern quantum mechanical ideas. It covers the discovery of electrons, protons and neutrons; Thomson’s, Rutherford’s and