2. Electrostatics Study of electrical charges that can be collected in one place Involves Electric charges Forces between them Their behavior in material

3. Charged objects Ever get shocked touching something, underneath bed sheets, balloon to your hair??? Things become charged Caused by rubbing (wool is best) Greeks did this with amber Get the term elektron

4. Microscopic View of Charge Electrical charge exists within atoms Thompson discovered that all materials contain light, negatively charged particles called electrons Rutheford discovered that atoms have a positive center called a nucleus When positive and negative charges are balanced, atom is said to be neutral

5. Electrons can be removed from atoms with an addition of energy Atoms losing the electrons are said to be positive The freed electrons can remain unattached of become attached to other atoms, giving a negative charge

6. Conductors and Insulators Conductors Materials that allow electrical charges to move easily Electrical charges are spread through entire material Metals

7. Conductors and Insulators Insulators Materials that do not allow electrical charges to move easily Glass, wood, plastic