Page 79 - CITS - Fitter - Trade Theory

FITTER - CITS

3 Appearance and Texture:

• Metals: Metals typically have a shiny or reflective surface (metallic lustre) and a dense, opaque appear-
ance. They may have a smooth or rough texture, depending on factors such as surface treatment or alloy
composition.
• Non-metals: Non-metals can exhibit a wide range of appearances and textures. They may appear trans-
lucent, opaque, or transparent, and their textures may vary from brittle and powdery to waxy or crystalline.
4 Occurrence in Nature:
• Metals: Metals are abundant in the Earth’s crust and can be found in various ores and minerals. Some
common metal ores include iron ore (hematite), aluminium ore (bauxite), and copper ore (chalcopyrite).
• Non-metals: Non-metals are also abundant in the Earth’s crust, but they are typically found in different
mineral forms compared to metals. Examples of non- metallic minerals include sulphur, graphite, and
quartz.

Various type property of metal

Objectives: At the end of this lesson, you will be able to
• define the metal
• state the various types properties of metal
• state the about various properties like physical, chemical and mechanical.

Introduction:
Metals are made by raw material which we distract from mines, Which we say ore. There are different impurities
in ores.
Pure metal we can distract by metallurgy.
Definition:

Solid material which has property of heat and electricity conductor, malleability, ductility and have melting tem-
perature is called metal.
Types: There are three type property of metal.

1 Physical Property
2 Chemical Property
3 Mechanical property

1 Physical Property
Metals physical properties are natural; we should recognize metals by its physical property.
These are permanent in metal.
As- color, structure, weight, fusibility, magnetism, conductivity etc.
Some of the main physical properties of metals are given below.

• Metals can be hammered into thin sheets. It means they possess the property of malleability.
• Metals are ductile. They can be drawn into wires.
• Metals are a good conductor of heat and electricity.
• Metals are lustrous which means they have a shiny appearance.

• Metals have high tensile strength. It means they can hold heavyweights.

64

CITS : CG & M - Fitter - Lesson 11