Final answer:
Good conductors of electricity are mostly metals like copper and silver due to their high density of free electrons, with copper being widely used in electrical wiring. Silver is the best conductor but less used because of its cost. Gold and aluminum are also great conductors, often utilized in making cooking utensils.
Step-by-step explanation:
Good Conductors of Electricity
Materials that are good conductors of electricity are typically metals, due to the presence of free electrons that allow for easy movement of electric charge. Copper is renowned for its conductivity and is widely used in electrical wiring. Although silver has the highest electrical conductivity, it is not commonly used due to its high cost. Other excellent conductors include gold and aluminum, which, like copper and silver, have a high density of free electrons enabling them to conduct electricity effectively. These materials are also known for being good thermal conductors, which is why they are often used in cooking utensils.
Matter can be classified into electric conductors and insulators. Electrical conductors, such as most metals, allow electrical current to pass through, while insulators, like plastic, wood, and ceramic, do not. Thermal properties are similarly divided, with metals usually being good thermal conductors and insulators typically being materials that do not conduct heat well.