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He studied the effects of x-rays on gases. He used a thin gold paper and small positive charged alpha particles through the paper. Some would repel and some would go through. He thought that happened because the ones that went through were it passing through the gaps, but when they would repel it was when they would hit the center.

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He showed that it was impossible to determine the exact position and the speed of an electron because they moved around a bunch. It is because the atoms never stop changing, so you can't be exact that they will stay the way you determine that they are going to go.

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He thought that electrons orbit the nucleus at fixed energies and distances. He also thought that they were able to jump from one level to another, but not able to exist in the space in between.

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Dalton showed that common substances always broke down into the same elements in the same portions. Dalton ended up with the compounds where combined atoms of different elements.

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It was that he discovered electrons. He showed that atoms were uniformed spheres that were positive, filled with some negative charged electrons.

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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.