* Many metals are shiny: Gold, silver, copper, aluminum, and many others have a characteristic metallic luster.
* Some nonmetals are also shiny: For example, iodine crystals have a shiny, almost metallic appearance. Graphite (a form of carbon) can also be shiny.
To determine if a substance is a metal or a nonmetal, you need to consider other properties:
* Conductivity: Metals are good conductors of heat and electricity. Nonmetals are generally poor conductors.
* Malleability and Ductility: Metals can be hammered into thin sheets (malleable) and drawn into wires (ductile). Nonmetals are typically brittle.
* Density: Metals tend to have higher densities than nonmetals.
* Reactivity: Metals are generally more reactive than nonmetals.
So, shininess alone is not a reliable indicator of whether a substance is a metal or a nonmetal.
