CBSE Class 8 Science Metals and Non-metals — Worksheets & PDF Download

This chapter explores the distinct characteristics and behaviors of metals and non-metals, two broad categories that classify almost every element around us. The text reveals how elements differ in their physical qualities, such as their shine, hardness, and ability to carry heat or electricity. Moving beyond mere appearance, it explains how these substances react differently when exposed to air, water, and acids. A key focus is the concept of relative reactivity, showing how a more active element can push out a less active one from its compound. Students learn why certain materials slowly rust or tarnish when left exposed, along with simple methods to prevent such damage. By connecting these chemical behaviors to familiar objects like cooking vessels and electrical wires, the chapter highlights why understanding material properties matters deeply for practical choices and everyday safety.