If you put a metal bar into a candle (or bunsen) flame, it gets hot quickly. Soon you can't hold it. If you put a glass bar into a candle, it won't get too hot to hold. But if you touched the end that was in the flame, you would find that it is really hot!
The process in which heat passes through a solid substance is called conduction. Metals are good conductors of heat. Non-metals are generally bad conductors of heat. Liquids and gases are bad conductors of heat as well. A bad conductor of heat is called an insulator.
The process in which heat passes through a solid substance is called conduction. Metals are good conductors of heat. Non-metals are generally bad conductors of heat. Liquids and gases are bad conductors of heat as well. A bad conductor of heat is called an insulator.
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