Materials that are good conductors of thermal energy are called thermal conductors. Metals are very good thermal conductors. Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators. Good electrical conductors
All metals conduct electricity, but some metals are better than others. Copper, aluminium, gold and silver are very good conductors. Silver conducts electricity better than copper does, but silver is too expensive to use for electrical wiring.
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Materials that are good conductors of thermal energy are called thermal conductors. Metals are very good thermal conductors. Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators. Good electrical conductors
All metals conduct electricity, but some metals are better than others. Copper, aluminium, gold and silver are very good conductors. Silver conducts electricity better than copper does, but silver is too expensive to use for electrical wiring.