Here's why:
* Electrons and Conductivity: Electrical conductivity depends on the movement of electrons. In conductors, electrons are loosely bound and can move freely, allowing for easy current flow.
* Insulators and Tightly Bound Electrons: Insulators have electrons that are tightly bound to their atoms. These electrons require a significant amount of energy to be removed or added, making it very difficult for them to move freely. This means they resist the flow of electricity.
Examples of Insulators:
* Glass
* Rubber
* Plastic
* Wood
* Air
Note: There is a category of materials called semiconductors that fall somewhere in between conductors and insulators. They can be manipulated to act as both conductors and insulators under certain conditions.
