Sticky tape lab

By Ryan Casey
Last updated over 3 years ago
21 Questions
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Describe the macroscopic changes in the tapes and then provide a microscopic explanation based on Thomson’s model of the atom and your drawings.

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We observed that neither foil (metal atoms) nor paper (non-metal atoms) would attract each other. But foil and paper are both attracted to both the charged tapes (top and bottom).
How can we use the pudding model of atoms to explain the differences we observed?
Several atoms from the paper and foil are drawn on the next page. The ones on the left have no charged object near them. The ones on the right are next to a top tape (+ charge).

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Add force vectors to the non-metal (paper) atoms and the top tape in the first row to show the attraction between the paper and the tape. Then do the same for the foil and the tape in the second row. Be sure the size of the vectors shows the relative strengths of the attractions.
Now draw the electrons in each atom “bowl” to show their arrangements when no charged object is near present and then when a charged object is brought near.

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Explain why these arrangements of electrons would produce the observed attractions.