Because the structure of graphite is in such a way that electrons can move freely and conduct electricity. Graphite is a non-metal. What makes a material a conductor or an insulator? Silver Conductivity “Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons). This is because the atomic nuclei within a metal are neatly arranged, but their electrons are free to roam between atoms. Simply put, electrical conductors are materials that conduct electricity and insulators are materials that do not. On the other hand, a bad conductor of electricity is one that prevent free flow of electric current through it. Compared to non-metals (say wood or plastic), it is a fantastic conductor of both heat and electricity. Due to this property, it is used in making of pencil cells. Water is a poor conductor of heat, and is actually classified as an insulator of heat. Generally, non-metals are bad conductors of electricity but graphite is an exception. Whether a substance conducts electricity is determined by how easily electrons move through it. For a material to be a good conductor, the electricity passed through it must be able to move the electrons; the more free electrons in a metal, the greater its conductivity. Platinum is a good conductor of electricity as it`s a metal because metals are good conductors of electricity. A good conductor of electricity is any material that allows easy passage of electricity through it without much resistance. Materials that are good conductors of heat and of electricity must have free electrons that can carry the energy from one compound to the next. Yes, all metals conduct heat and electricity well. Compared to what and of what? Is water good conductor of heat?

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