Conductors:
* Metals: Copper, silver, gold, aluminum, iron, steel.
* Water: (Especially when containing dissolved salts or impurities)
* Graphite: A form of carbon.
* Human Body: Conducts electricity, but resistance varies greatly.
* Earth: Technically a conductor, especially damp soil.
Insulators:
* Non-metals: Rubber, glass, plastic, wood, ceramic, air, diamond.
* Dry Air: An excellent insulator.
* Paper: Good insulator when dry, but conductive when wet.
* Fabric: Many fabrics are good insulators, especially when dry.
* Oil: Used in transformers and other electrical equipment as an insulator.
Important Notes:
* Material Properties: Conductivity and insulation depend on the specific material, its purity, and its temperature.
* Applications: Insulators are used to prevent the flow of electricity, while conductors are used to allow the flow of electricity.
* Safety: Understanding the properties of conductors and insulators is crucial for electrical safety.
Let me know if you'd like more information about any specific material or want a deeper explanation of conductivity and insulation!