1. Conductors & Insulators

2. Conductors & Insulators
In which material is there more movement of electrons?

3. Conductors
In a conductor (usually metal) many of the electrons are free to move around within the conductor.
Conductors are often referred to as having a "sea of electrons".

4. A conductor is a material that allows electrons to flow through it easily.
Good Conductors
Silver
Copper
Gold
Aluminum
Magnesium
Tungsten
Nickel
Mercury
Platinum
Iron

5. Conductors

6. 11.4
Insulators
In an insulator (such as plastic, rubber, glass, etc) the electrons are not free to move around the entire object.
They are generally restricted to moving only around the atom they are attached to.
They can move from one side of the atom to the other but are unable to leave the atom.

7. An insulator is a material that prevents electrons from flowing through it.
Good Insulators
Plastic
Paper
Wood
Wax
Glass
Ebonite
Rubber
Wool
Silk
Fur

8. To prevent electric shocks, a conductive wire is always wrapped in an insulator. That way, the wire is safer to handle.

9. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
Copper wire
Conductor

10. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
Rubber tube
Insulator

11. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
Gold Coin
Conductor

12. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
Stick
Insulator

13. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
key
Conductor

14. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
eraser
insulator

15. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
Paper clip
Conductor

16. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
cloth
insulator

17. Conductor or Insulator?
For each of the following state whether the substance is a conductor or an insulator.
fork
Conductor

18. Homework
11.4
p. 482 # 3, 4, 6, 7