Chemistry

This chapter highlights the three major laws related to the measurement of matter. It also discusses the size and molecular mass of an atom. In addition, it explains the valency of different atoms and radicals.

This chapter explains the Arrhenius theory of acids and bases, classification of acids and bases and the concentration of an acid or a base. It also discusses the pH value of the solution, acid and base, salt, and its types.

This chapter explores the importance of weather for the living world. It also explains the different methods of solid waste management. Moreover, it describes three basic principles of first aid and gives some emergency measures.

This chapter explains carbon, its occurrence, properties and allotropes. It covers hydrocarbon, carbon dioxide, and methane. The occurrence, properties, and uses of carbon dioxide and methane are also discussed here.

In this chapter, we will discuss various properties and uses of different salts. We will also learn about radioactive substances. Moreover, we will enhance our knowledge of different chemical substances that we use in our daily life.