1. The Idea of Charges
The beginnings of the ideas of atomic interactions, charges, and the nucleus

2. Remind me about Atoms…

7. In Reality Our model: Electron clouds of uncertainty
Tiny nucleus (still uncertain boundries)

8. The Nucleus: Where the protons and neutrons are
The electrons: Exist outside of it
Different elements have different number of protons and neutrons
The amount of electrons does not affect the nucleus

10. For example
An atom has a nucleus of 20 protons, 10 neutrons, and has 17 electrons orbiting. What is its overall charge?

11. For example
An atom has a nucleus of 20 protons, 10 neutrons, and has 17 electrons orbiting. How many COULUMBS is that?

12. When two atoms or objects interact, only electrons move between them.
Picture:

13. LAB

14. For example
An atom has a nucleus of 20 protons, 10 neutrons, and has 17 electrons orbiting.
In nature, things want to be NEUTRAL.
How does this become neutral?

15. HOW TO NEUTRALIZE In this case… it’s a net POSITIVE.
Ideas: Can gain electrons or lose protons.
But there is a MAJOR flaw here…

16. HOW TO NEUTRALIZE What did you notice?
What would happen if rubbing him took electrons?

17. GROUNDING
Grounding means making neutral by being exposed to Earth through a conductor.
If a positive charge is connected…
If a negative charge is connected…

18. If the amount of charge is conserved, that means in any situation, the total amount of charge in a system….
If a charge is FUNDAMENTAL, then is it possible to have a fraction of that amount?