Did already ask this in a question further down but got no responses so can anyone explain the above concept to me, in terms of how heat is transferred if possible?
In a metal the outermost electrons are free to travel away from their original atoms and can move easilly through the metal. Sometimes they're called "delocalised"
Thankyou!! All of the books I could find explained that heat and electricity could be passed through free electrons but not what they were! Thanks again!