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Heisenburg introduced a new idea to the atom that electrons cannot be measured accurately. Also, the strength of the nucleus. He experimented with this by attempting to measure an electron with a Gama Ray microscope.

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Bohr described an atom as having electrons exist at a fixed distance from the nucleus based on the amount of energy. Bohr used modified the atomic structure by adding that electrons move around an orbital surrounding the nucleus.

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Rutherford described an atom as having a tiny positively charged nucleus. he discovered this during his gold foil experiment. He shot a beam of positively charged particles through a sheet of gold foil. A few particles deflected and he concluded that this was because of dense nucleus.

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Dalton described an atom as solid moveable particles with distinct masses. His model shows tightly packed atoms. This model was called billard ball model.

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Thompson depicted an atom as a makeup of positively and negatively charged electrons surrounded by a sphere. His theory was debunked when Rutherford did his gold foil experiment when he found that there was lots of space between the electrons and the nucleus.

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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.