Class 9th Chemistry notes

Matter in our surroundings

Matter may be defined as anything that occupies space possesses mass and the presence of which can be felt by any one or more of our five senses. Here you will get all important topics such as INTRODUCTION OF MATTER, CHARACTERSTICS OF MATTER, STATE OF MATTER, PROPERTIES OF MATTER, TEMPERATURE, EFFECT OF TEMPERATURE ON STATE OF MATTER, SUBLIMATION AND ITS SUBLIMATION, EVOPORATION & FACTORS AFFECT IT, EVOPORATION CAUSE COOLING

Is matter around us pure

In this chapter you will get topics such as CHARACTERSTIC OF PUR SUBSTANCE, MIXTURE & TYPES OF MIXTURE, COMPOUND & ITS PROPERTIES, SUSPENSION, PHYSICAL & CHEMICAL CHANGE, COLLOID & ITS PROPERTIES, COAGULATION, ELECTROPHORESIS, FRACTIONAL DISTILLATION, CHROMATOGRAPHY, METAL & NON-METALS

Atoms and molecules

In this chapter, you will learn about the fundamental building blocks of matter—atoms and molecules. The chapter covers the following topics such as two laws of chemical combination, formation of ions, formation of compounds, atomicity, etc.

Structure of atom

In this chapter, you will learn about the actual structure of atom, scattering experiment, Thomson model of atom, etc