Metals, Nonmetals, and Metalloids

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Brittle

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Breaks or shatters easily when hit or bent.

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Chemical Symbol

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A one- or two-letter code that stands for an element (like H for hydrogen or O for oxygen).

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Conductivity

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How well a substance lets heat or electricity pass through it.

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Elements

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Pure substances that are made of only one type of atom.

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Luster

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How shiny a material is. (High luster = very shiny, Low luster = dull)

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Malleability

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The ability of a material to be hammered or bent without breaking.

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Metals

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Elements that are typically solid, shiny, malleable, and good conductors of heat and electricity; includes most elements.

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Nonmetals

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Elements that are typically not shiny, not malleable, and poor conductors of heat and electricity; usually gases or brittle solids.

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Metalloids

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Elements that have properties of both metals and nonmetals.

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Molecules

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Two or more atoms joined together.