1. Electric Charges
ELECTRICITY

2. Learning Goals
To be able to explain electric charge

3. Atom – the smallest part of a substance that retains the properties of that substance
Atoms are made of 3 subatomic particles: protons, neutrons, and electrons

4. Particle Electric Charge Location Property Proton Neutron Electron
Positive
Nucleus
Cannot move from atom to atom
Neutron
No charge (neutral)
Electron
Negative
Around nucleus
Can move from atom to atom

5. Electric force – force of attraction or repulsion between charged objects

6. Charged and Neutral Objects
Only electrons can move
In order for an object to become charged, it has to either gain or lose electrons

7. Neutral
Negative
Positive
Same number of protons and electrons
When an atom gains electrons
When an atom loses electrons

8. Law of Electric Charges
Objects with the same (like) charges repel
Objects with opposite (unlike) charges attract
Charged objects will sometimes attract neutral objects

10. Strength of Force
Depends on the distance between the objects and the amount of charge on the objects
The closer the objects are, the stronger the force
The larger the charge, the stronger the force

12. Success Criteria
I CAN explain how items become electrically charged by the movement of electrons

13. To Do…
Worksheet
Bill Nye