1. Charge

2. Warm Up What is an electron? Where is located in an atom?
What is a proton? Where is it located in an atom?

3. Atoms
What are the parts in an Atom?

5. Electrons
Electrons are present in the region of space outside the nucleus.
They are negatively charged and weakly bound to the atom.
They are loosey goosey and float from one atom to the next
They like to party

6. Protons and Neutrons
The nucleus of the atom contains positively charged protons and neutral neutrons. 
They are in the center of the atom.
The protons and neutrons will remain within the nucleus of the atom. 
They like to stay at home and watch Netflix.
THEY NEVER LEAVE THEIR HOME

7. Charges at Rest
Charge
there are two kinds of charge, positive and negative
positive charge comes from having more protons than electrons
negative charge comes from having more electrons than protons

9. Charge Interactions
Opposite charges repel
Same charges attract

10. Opposites Attract

11. Sames Repel
“Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye?”

12. Electrostatic charging
Materials are divided into three categories, depending on how easily they will allow charge (i.e., electrons) to flow along them. These are:
conductors
insulators
semi-conductors

13. Conductors
the outermost electrons in the atoms are so loosely bound to their atoms that they’re free to travel around. metals, for example

14. Insulators
In insulators, on the other hand, the electrons are much more tightly bound to the atoms, and are not free to flow, rubber, wood, plastic for example

15. Semi-Conductors - In between conductor and insulator
silicon is a good example

16. Three ways that objects can be given a net charge
Charging by friction
Charging by conduction
Charging by induction

17. Friction this is useful for charging insulators.
rub one material with another
Electrons transfer from one material to the other.
For example, rubbing glass with silk or saran wrap generally leaves the glass with a positive charge; rubbing PVC rod with fur generally gives the rod a negative charge.

18. Charge by Friction

20. Conduction useful for charging metals and other conductors.
If a charged object touches a conductor
charging the conductor with the same sign as the charge on the object

21. Induction also useful for conductors.
a charged object is brought close to the conductor, and does not touch it.
If the conductor is connected to ground (ground is basically anything neutral that can give up electrons to, or take electrons from, an object),
electrons will either flow on to it or away from it.
When the ground connection is removed , the conductor will have a charge opposite in sign to that of the charged object

22. Polarization
is the process of separating opposite charges within an object