Materials

In this chapter, we will learn about animal fibres and how they are used to make different fabrics in detail. It explains the process involved in the production of wool and silk. It also briefs on the health hazards in wool production and sericulture.

This chapter helps us understand the temperature and its measuring instrument. A brief on the heat and the modes of transfer including conduction, convection and radiation with their application is also given.

In this chapter, we will learn about the matter with its composition and properties. A classification of matter into elements and compounds with a brief on mixtures is covered. It also mentions the chemical symbols of elements for making chemical formulae with chemical reactions.

In this chapter, we will study the acidic and basic substances with their properties, types and uses. It briefs on indicators and pH along with detail on salts and their properties. We will also learn the neutralization reactions in everyday life.

This chapter deals with the types of changes including physical and chemical changes with their properties. It describes chemical substances with their characteristics. It also explains the types of chemical reactions.