You must complete Understanding Technology: Introduction to Technology to unlock this Lesson.

PROPERTIES OF METALS

CONTENT

  1. The Definition of Metals
  2. Identification of Metals by Physical Properties
  3. Classification of Metals

 

The Definition of Metals

A metal is a material (a compound, element or alloy) that is hard when in solid state, opaque, shiny, and which is a good conductor of heat and electricity.

Identification of Metals by Physical Properties

Identification of metals can be defined as a method used to differentiate one particular type of metal from another and from other materials which are non-metals.

Metals can be identified through their properties, which include:

  1. Density: This is the weight of a metal and it varies from metal to metal. E.g. aluminum is light and lead is heavy in weight.
  2. Colour/Lustre: This is the appearance of a metal when the surface is polished. For example, when polished and examined under a microscope, copper presents a different appearance from polished mild steel.
  3. Fusibility: This is the property of a metal which makes it melt and join with other metals while in a liquid form.
Lesson tags: Basic Technology Lesson Notes, Basic Technology Objective Questions, JSS1 Basic Technology, JSS1 Basic Technology Evaluation Questions, JSS1 Basic Technology Evaluation Questions First Term, JSS1 Basic Technology First Term, JSS1 Basic Technology Objective Questions, JSS1 Basic Technology Objective Questions First Term
Back to: Basic Technology – JSS1 (Upper Basic 7) > First Term
© [2022] Spidaworks Digital - All rights reserved.