Properties of Materials II

Basic Technology J.S.S 1 First Term

WEEK 9

Properties of Materials II

Performance Objectives

Students should be able to:

1. Identify, classify and describe the properties of metals

Content

Metals are another material used in the construction of things and they can be identified using their identity, colour/lustre, fusibility, magnetic effect, conduction of heat and sound.

There are about 103 elements, 92 of which are naturally occurring. Metals and non-metals are characterized by distinctly different physical and chemical properties. At present about 80 metals are known to us. Metals can be shaped like clay, are heat-resistant, and are not fragile.

A metal is a material (an element, compound, or alloy) that is typically hard when in a solid-state, opaque, shiny, and…