1. Good conductors of heat and electricity: Electrons in metals are loosely bound and can move freely, allowing them to easily transfer heat and electrical energy.

2. Malleable and ductile: Metals can be hammered into thin sheets (malleability) and drawn into wires (ductility). This is due to the ability of their atoms to slide past each other without breaking the metallic bonds.

3. Lustrous: Many metals have a shiny surface, reflecting light well. This is due to the free electrons interacting with light waves.

4. Solid at room temperature: Most metals are solid at room temperature, with the exception of mercury, which is liquid. This is due to the strong metallic bonds holding their atoms tightly together.