Conductors , Semiconductors , Insulators


  • Are materials that freely allow the flow of electrons with very little resistance.

  • Real world examples: Copper, aluminum, gold, and silver.
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  • Are materials that do not allow electrons to flow freely but do not directly stop them either. Semiconductors have more resistance than conductors but less resistance than insulators.

  • Real world examples: germanium, selenium, and silicon
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  • Are materials that greatly impede or stop the flow of electrons with very high resistance.

  • Real world example : glass, air, plastic, rubber, and wood.
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