6.6C - Metals, Nonmetals, Metalloids Review

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What are metals?

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Metals are elements that are typically shiny, good conductors of heat and electricity, malleable, and ductile. Examples include iron, copper, and gold.

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What are nonmetals?

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Nonmetals are elements that lack the properties of metals. They are usually poor conductors of heat and electricity and can be gases, liquids, or brittle solids. Examples include oxygen, carbon, and sulfur.

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What are metalloids?

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Metalloids are elements that have properties of both metals and nonmetals. They are often semiconductors, which means they can conduct electricity better than nonmetals but not as well as metals. Examples include silicon and arsenic.

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What is a conductor?

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A conductor is a material that allows electricity or heat to flow through it easily. Metals are generally good conductors.

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What is a semiconductor?

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A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. They are used in electronic devices. Silicon is a common example.

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What is luster?

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Luster refers to the way light interacts with the surface of a mineral or metal. Metals typically have a shiny luster.

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What is ductility?

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Ductility is the ability of a material to be stretched into a wire without breaking. Metals are usually ductile.

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What is malleability?

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Malleability is the ability of a material to be hammered or pressed into shape without breaking. Metals are generally malleable.

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What is the Periodic Table?

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The Periodic Table is a chart that organizes all known elements based on their atomic number, electron configuration, and recurring chemical properties.

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What are rare earth elements?

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Rare earth elements are a group of 17 elements that are critical in modern technology, including metals like plutonium, which have unique properties.