1. Static Electricity

2. Atoms are made of protons, neutrons and electrons.
Electrons move around the outside of the atom

3. Electricity is the study of the movement of electrons.

4. Electric Charges

5. Atomic Particles Protons have positive + charges
Electrons have negative – charges
Most atoms have equal number of protons and neutrons
What charge would most atoms have?

6. What charge is the object?
NEUTRAL
Equal number of protons and electrons

7. What charge is the object?
POSITIVE
More protons than electrons

8. What charge is the object?
NEGATIVE
More electrons than protons

9. Learning Check On the next page
decide whether there is a positive, negative or neutral charge and
How you know what the charge is
Write down you answers in your notebook

10. Learning Check
Charges worksheet

11. Magnet Activity There are 3 laws of electric charges
Use the magnets and irons pieces to determine the three laws.

12. The Law of Electric Charges
1. Unlike charges attract.
Positive charges are attracted to negative charges.

13. 2. Like charges repel
Positive charges are repelled by positive charges.
Negative charges are repelled by negative charges.

14. 3. Charged (positive or negative) objects are attracted to neutral objects.
Positively charged objects are attracted to neutral objects.
Negatively charged objects are attracted to neutral objects.

15. Quiz Time!!!
Repel
Repel
Attract
Attract

16. Static Charge Real World Use
Electrostatic Paint Sprayers
Paint is given a charge as it leaves the nozzle
Object is given the opposite charge
The particles therefore attract