Book Title: Viva Chemistry - 9
Product Code / ISBN Code 9789387153165
Syllabus: CBSE
Publisher: Viva
Language: English
Strictly Based on Latest NCERT/ CBSE Syllabus
The book VIVA Chemistry for Class IX has been written in keeping with the latest NCERT syllabus prescribed by the Central Board of Secondary Education (CBSE). The book has been developed keeping in view the requirement of the students at the secondary level.
Salient features of the book
Contents:
Chapter 1: The Matter in Our Surroundings • Matter • Physical nature of matter • States of matter • The solid state • The liquid state • The gaseous state • Change of state • Evaporation • Water vapour in the air
Chapter 2: Is Matter Around Us Pure • Classification of matter • Mixtures • Solutions • Concentration of a solution • Suspensions • Colloids • Towards a pure substance from a mixture • Separation of a pure substance from a mixture • Separation of the constituents of air • Water purification system for city/town water supply • Physical and chemical changes • Types of substances • Elements • Chemical compounds
Chapter 3: Atoms and Molecules (The Particles of Matter) • Laws of chemical combination • Atoms and atomic theory of matter • Atomic symbols • Atomic mass • Molecules and their chemical formulae • Ions and ionic compounds • Valence electrons and valency • Writing chemical formulae • Writing formulae of molecular compounds • Writing formulae of ionic compounds • Molecular mass • Formula mass • Composition of a compound • The mole concept • Gram-atomic mass and gram-molecular mass
Chapter 4: Structure of Atom • Electrical nature of matter: discharge tube experiments • Cathode rays • J.J. Thomson’s experiment and the discovery of electron • Positive rays (anode rays or canal rays) • The proton • The neutron • The structure of atom • Rutherford’s nuclear model of the atom • Böhr’s model of the atom • Nuclear composition: atomic nucleus • Valence electrons and valency • Isotopes • Isobars
Model Questions for Year-End Examination
Value-Based Questions