1. Electric Charge
6.1.1

2. Atomic Model

3. Matter is composed of atoms.
These atoms are composed of:
Protons - positive charge
Neutrons - no charge
Electrons - negative charge

4. Atoms do not have a charge because the number of electrons and protons cancel each other out.
Ex. 3 protons (+) and 3 electrons (-) = 0

5. Charged Objects How do objects get charged?
They either gain or lose electrons.
3 protons (+) and electrons (-) =
7 protons (+) and 2 electrons (-) =

6. Positive and negative charges exert forces on each other
Opposite charges attract
Like charges repel

7. Positive and Negative Charges

8. How Can You Charge Objects?
There are 3 ways objects can be charged:
Friction
Conduction
Induction
In each of these, only the electrons move.

9. Charging by Friction
occurs when electrons are “wiped” from one object onto another.

10. Static Electricity
Static electricity is the accumulation of electric charges at rest on an object.
The charges of static electricity do not move away from the object that they are in. So, the object keeps its charge.
Ex. Clothes taken out of a dryer

11. Electric Discharge
the loss of static electricity as charges move off an object
Sometimes, electric discharge happens slowly.
Ex: static on clothes
Sometimes, electric discharge happens quickly.
Ex. wearing rubber-soled shoes on carpet, lightning

12. Law of Conservation of Charge
Electric charges can be transferred from object to object, but it cannot be created or destroyed.