Exercise 1.1

Exercise 1.2

Exercise 1.3

Exercise 1.4

Matter in Our Surroundings

Chemistry

Is Matter Around Us Pure

Atoms and Molecules

Structure of the Atom

Class 9 Chemistry is useful in helping students understand the functioning of the world scientifically. The chapter of Matter In Our Surroundings will discuss how matter is an important part of our planet and how it makes up the whole planet. In addition to giving information about the matter, you will also learn about chemical and physical properties of matter. Moreover, it also discusses the physical nature of matter and explains terms like evaporation, boiling point and more. Next, Is Matter Around Us Pure will clear this question and make students aware of the pollutants present in the atmosphere. It also discusses concepts of solutions, pure substances, mixtures, suspensions, and more. Similarly, it will also explain homogenous and heterogeneous substances. Atoms and Molecules is a chapter that will explain all about atoms in detail. It will also discuss molecules and those of compounds and elements. Further, students will learn about ions, the law of conservation of energy, the law of chemical combination, Dalton's atomic theory and more. Finally, the Structure of the Atom will discuss popular theories or models with respect to atoms that J.J. Thompson gave. In addition to the model, it will also discuss its drawbacks and explain the divisibility of atoms.