Some of the properties of metals are thermal and electrical conductivity, malleability, fusibility and the ability to be stretched thinly, such as in the making of copper wire. Most metals are shiny and hard. They are also versatile in the way in which their properties can be controlled or altered to suit various industrial and technological needs.
The atoms that make up a metal are able to slide around in rows and rearrange themselves relatively easily. A metal will, however, develop defects after a certain degree of rearranging and lose its malleability. A defect is an instance in which a row of metallic atoms is knocked out of alignment and can no longer slide past the adjacent rows. An increasing number of such defects will significantly limit the ability of the metal's atoms to be rearranged, but the metal will also become stronger as a result.