ELECTRICITY BACKGROUND INFO
Examples: iron, water, and most other metals, are conductors!
When you put a metal pot on the stove, it will get very hot because the heat runs through it quick and easy with no stop, and if you touch it, it will burn you. If you put a rubber handle on it. It won't be as hot.
Examples: silicon and geranium are semi-conductors!
Most electronic devices, like your phone, have semi-conductors. The electrons cannot just flow around everywhere but they can get through slower so your device doesn't get crazy hot.
Example: glass, rubber, and water are all insulators!
In your house, the wires are all covered with a coating made of a material like rubber. This material is an insulator. It stops the electrons from shocking any person who touches it.
Comparing and Contrasting!
Metal wires (inside the coating on the outside) are conductors. They let electrons flow fast and freely.
Most electronic devices are semi-conductors!!! The electrons cannot flow fast and free but they still flow.
This holder on the outside of the cup is an insulator because it stops the flow of electrons and it holds in the heat so it doesn't burn your hand.