Materials

This chapter introduces us to a pure substance, mixture, and solution. The need for separation of substances is also elaborated here. It also teaches some methods to separate solid-solid and solid-liquid mixtures.

This topic tells us about different types of fibres and fabrics. It also explains the methods of obtaining fabric from fibres. The processes of spinning, knitting, and weaving are briefly explained here.

This chapter discusses on sorting materials on the basis of their lustre, texture, hardness, and state. It further explains on how to separate materials depending on their solubility, transparency, conductivity, and magnetic properties.

This chapter helps us to differentiate reversible changes from non-reversible changes and chemical changes from physical changes. We will also learn how different substances expand and contract.