Page 130 - Science Class 6 Times Publication

Chapter
Chapter

12 METAL AND

NON-METAL

Estimated periods: 8

OBJECTIVES

At the end of the lesson, the students will be able to :
Ü give general introducti on of metals and non-metals;
Ü explain the uses of metals and non-metals in daily life.

MIND OPENERS
Ü What utensils are being used at your home? Name them.
Ü What are these utensils made of? How are they made?

Ü Can you make a ne plate by beating a stone? Discuss.

Introduction

Matter is anything that has mass and occupies space. The matter is
composed of either element, compound or their mixture. An element
is the pure substance that is made of similar kinds of particles. There
are altogether 118 elements discovered so far. These elements can be
categorized into three types-metals, non-metals and metalloids.

Metals

We use many metals in our daily life. Our household appliances,
equipments and machines are made of metals. For example, sickle,
axe, knife, khukuri, gates of buildings, grill, shutter, etc are made of
iron. Bowls, plates, spoon, etc are made of steel. Water pot (pitcher),
electric wire, etc are made of copper. The ornaments like chain,
necklace, bracelet, bangle, etc are made of gold. Hence, metals are
very useful in our daily life.

The metals are generally hard solids. They are shiny in appearance
and produce a peculiar metallic sound if struck. The metals conduct
heat

Times' Crucial Science and Environment 126 Book 6