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-concluded it was impossible to determine both the exact position and speed of electrons as they moved around an atom.
-Electrons can not be pinpointed but exist within a range of possible locations gave rise to the current model of the atom.

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-theorized that electrons orbited the nucleus, at fixed energies and distances. Able to jump from one level to another, but not to exist in the space between.
-was proved wrong, and was later discovered that the electrons behaved more like waves and not confined to a point in space.

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-studied the effects of x-rays on gases, he shot small positively charged alpha particles at a sheet of gold foil. He theorized that the particles would punch through the atoms. Not all alpha particles were able to punch through the atom,
-concluded that atoms consisted largely of empty space, with just a few electrons. While most of the mass was concentrated in the center. Called the nucleus.

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-theorized that common substances always broke down into the same elements and into the same proportions.
-concluded that the various compounds were combinations of atoms of different elements, each of a particular size and mass. that could neither be created nor destroyed.

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atoms are filled with negatively charged electrons

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-discovered the electron in 1897
-concluded that atoms were uniformly packed spheres of positive matter, filled with negatively charged electrons.

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This is due wednesday @ 11:50pm

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.