What are metals made of and how do their compositions contribute to their unique properties and characteristics?

Metals are made of atoms that are closely packed together in a regular pattern. The composition of metals, which includes elements like iron, copper, and aluminum, contributes to their unique properties such as conductivity, malleability, and strength. The arrangement of atoms in metals allows for the movement of electrons, which is why metals are good conductors of electricity and heat. Additionally, the bonding between atoms in metals gives them their characteristic shiny appearance and ability to be shaped without breaking.