Conductors:
* Metals: Copper, aluminum, gold, silver, iron. These are excellent conductors due to the free movement of electrons within their structure.
* Water: While pure water is a poor conductor, the presence of impurities like salts makes it conductive.
* Human Body: The fluids and tissues within our bodies contain ions, making us relatively good conductors of electricity.
* Graphite: A form of carbon with a layered structure allowing electron movement.
* Plasma: Ionized gas where electrons are free to move, making it a very good conductor.
Insulators:
* Rubber: Used in electrical cords and gloves for safety.
* Plastic: A common material used in many electrical components.
* Glass: Used in light bulbs and other electrical applications.
* Wood: A natural insulator, though different types can vary in conductivity.
* Air: Generally a good insulator, though high voltages can cause it to break down and become conductive (like lightning).
* Ceramic: Many ceramics have excellent insulating properties.
* Paper: A good insulator, often used in electrical equipment.
