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- He believed it was impossible to determine both the exact position of speed of electrons as they moved around an atom.

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-Believed that electrons orbited a nucleus at fixed energies and distances. Able to jump from one level to another but not to exist in the space in between. Electrons simultaneously behaved like waves, not being confined to a particular point in space.

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- He studied atoms by shooting small, positively charged alpha particles at a sheet of gold foil.
- The atom’s thinly dispersed positive charge would not be enough to deflect the particles in any one place.  Effect being basically a bunch of tennis balls punching through a thin paper screen.  Some particles bounced back however rather than go through.  This suggested the “foil” was more like a thick net with very big mesh.
- Atoms consisted of mostly empty space with just a few electrons, while most mass is concentrated at the center or the nucleus. The alpha particles passed through the gaps but bounced back from the dense, positively charged nucleus.

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-He showed atoms as uniformly packed spheres of positive matter and filled with negatively charged electrons.

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- Common substances always broke down into the same elements and into the same proportions. Various compounds were a combination of atoms of different elements, each of a particular size and mass. They could not be created or destroyed.

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This is due next class meeting, if not completed this period!

Instructions on how to turn in are below.

Video: https://www.youtube.com/watch?v=xazQRcSCRaY&pp=ygUVdGVkIGVkIGF0b21pYyB0aGVvcnkg

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1. Click arrow under your profile pic.

2. Click ADD MEMBERS.

3. ADD my email. Give me CAN ADMINISTER access.

4. Go BACK and go to CHANGE PRIVACY.

5. Click PUBLIC.

6. Make it so visitors can view.

7. Go BACK and click COPY LINK TO CLIPBOARD.

8. Submit that link on Google Classroom.