Atomic History Webquest
December 3, 2012
Write your answers in a word document and submit it on LMS.
For questions 1,2, and 3: Access the chemteam site from non district computer.
http://www.chemteam.info/AtomicStructure/Greeks.html
http://edtech2.boisestate.edu/lindabennett1/502/democritus.html
1. According to Democritus, what is the composition of matter?
2. What is the root of our word "atom" and how is this root misleading?
3. The Greeks believed that fire was a state of matter. How did atomists describe fire?
For questions 4 and 5:
http://higheredbcs.wiley.com/legacy/college/olmsted/0471478113/dialogue/dialogues/info_dalton.swf
https://www.boundless.com/chemistry/atoms-molecules-and-ions/history-of-atomic-structure/john-dalton-and-atomic-theory/
4. What are the five main ideas of Dalton's theory? What idea compromised the acceptance of his work?
5. Which of the basic ideas of Dalton's Atomic Theory is an extension of what the Greeks believed about atoms?
For questions 6, 7, and 8:
http://www-outreach.phy.cam.ac.uk/camphy/electron/electron_index.htm
http://www.rsc.org/chemsoc/timeline/pages/1897.html
http://www-outreach.phy.cam.ac.uk/camphy/nucleus/nucleus1_1.htm
6. How did Thomson use the cathode ray tube in his research?
7. What did Thomson conclude based on his research?
8. How did Thomson’s findings revise Dalton’s Atomic Theory?
For questions 9:
http://www.chemteam.info/AtomicStructure/Disc-of-Electron-Intro.html
http://www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/rutherford-model.html
9. Describe and sketch Thomson’s model of the atom. What is wrong with the picture presented on the www.iun.edu page?
For questions 10-12:
http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/ruther14.swf
http://www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/rutherford-model.html http://micro.magnet.fsu.edu/electromag/java/rutherford/
10. Go to the micro.magnet.fsu site. What do you observe when the slit width is adjusted to 4.0 nm?
11. How did Rutherford’s experiment disprove Thomson’s model of the atom?
12. What new model did Rutherford propose? Sketch it
For questions 13-16
http://www.cs.sbcc.edu/physics/solar/sciencesegment/bohratom.swf
For Bohr..... stop when it gets into covalent bonding
http://www.colorado.edu/physics/2000/quantumzone/bohr.html
http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/linesp16.swf
http://www.upscale.utoronto.ca/PVB/Harrison/BohrModel/Flash/BohrModel.swf
http://www.launc.tased.edu.au/ONLINE/SCIENCES/physics/hydremiss.swf
http://www.pbs.org/wgbh/aso/databank/entries/bpbohr.html
13. What is the Bohr model of the atom?
14. How did Bohr explain that the electrons would not be “pulled into” the nucleus?
15. Whose work did he build upon?
16. How did Bohr’s ideas differ from that of Einstein’s?
1 / http://www.shs.d211.org/science/faculty/hlg/webquest%20atom.htmlhttp://mail.colonial.net/~cricket/chemistry/AtomicWebquest.html
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