How could one describe a metal

You might think Earth is a big lump of rock, hard on the outside and soft in the middle—but quite a lot of it is actually metal. What exactly is metal? Over three quarters of the chemical elements that occur naturally on our planet are metals, so it's almost easier to say what metal isn't.

Photo: Metal or alloy? Screws like this are usually made from steel, an alloy of iron (a metal) and carbon (a nonmetal).

When we talk about metals, we're usually referring to chemical elements that are solid (with relatively high melting points), hard, strong, durable, shiny, silvery gray in color, good conductors of electricity and heat, and easy to work into various different shapes and forms (such as thin sheets and wires). The word metal is quite a broad and vague term, and not something you can define precise

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