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1) Who performed the oil-drop experiment?
a. J.J. Thompson
b. Ernest Rutherford
c. Ronald Millikan
d. Henri Becquerel
e. None of the above

2) What element did Becquerel discover that emitted radiation?
a. Uranium
b. Radium
c. Thorium
d. Cesium
e. None of the above

3) Which of these was not discovered during the twentieth century?
a. Alpha particles
b. Beta particles
c. Gamma rays
d. All of the above were discovered during the twentieth century.

4) What did Millikan discover?
a. The nucleus.
b. The charge of the electron, equal to 1.602176487(40)×10−17 Coulombs.
c. Protons.
d. The electron cloud.
e. None of the above

5) When did Millikan perform his experiment?
a. 1908
b. 1910
c. 1912
d. 1914
e. None of the above

6) How many experiments did J.J. Thomson perform?
a) 1
b) 2
c) 3
d) 4

7) What types of rays was J.J. Thomson working with?
a) cathode rays
b) anode rays
c) alpha rays
d) beta rays

8) What nationality was J.J. Thomson?
a) American
b) Russian
c) British
d) German

9) What two items did J.J. Thomson's experiments discover?
a) protons and nucleus
b) electrons and subatomic particles
c) nucleus and electrons
d) subatomic particles and protons

10) What model did J.J. Thomson develop from his experiments?
a) ball and stick models
b) plum pudding model
c) nucleus model
d) 3-D models

11) What particle was used in the radioactive beam?
a. alpha particles
b. beta particles
c. gamma particles
d. none of the above

12) What was the screen that detected the reflected particles coated with?
a. magnesium sulfide
b. sodium chloride
c. potassium iodide
d. zinc sulfide

13) Rutherford expected the particles to:
a. deflect at huge angles from the foil
b. go straight through / slightly deflect the foil
c. deflect directly back from the foil
d. go straight through the foil without any deflecting

14) Who did Ernest Rutherford work with for the Gold Foil Experiment?
I. J.J. Thomson
II. Robert Millikan
III. Hans Geiger
IV. Ernest Marsden

a. I & II

b. III & IV

c. I, III, IV

d. I & III

15) Who had their model tested during the Gold Foil Experiment?
a. Henri Becquerel
b. Ernest Rutherford
c. Robert Millikan
d. J.J. Thomson

Answers!

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Bibliography

"A Look Inside the Atom." Mar 1997. American Institute of Physics. 28 May 2009.

http://www.aip.org/history/electron/jjhome.htm

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Encarta Dictionary Tools. Microsoft® Encarta® Reference Library 2004.

"Ernest Rutherford." 1 June 2009.

http://www.scientific-web.com/en/Physics/Biographies/ErnestRutherford.html

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"Henri Becquerel." Nobel Prize. The Nobel Foundation. 26 May 2009.

http://nobelprize.org/nobel_prizes/physics/laureates/1903/becquerel-bio.html

.

"Henri Becquerel." Wikipedia. Web.30 May 2009.

http://en.wikipedia.org/wiki/Henri_Becquerel

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"J.J. Thomson." Wikipedia. Web.30 May 2009.

http://en.wikipedia.org/wiki/J._J._Thomson

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"Manchester." Wikipedia. Web.29 May 2009.

http://en.wikipedia.org/wiki/Manchester

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"Millikan's Experiment." Atom- The Incredible World. 29 May 2009.

http://library.thinkquest.org/19662/low/eng/exp-millikan.html

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"Nuclear Atom." Biology-Online. 1 Jun 2009.

http://www.biology-online.org/dictionary/Nuclear_atom

.

"Oil-Drop Experiment." Absolute Astronomy. 28 May 2009.

http://www.absoluteastronomy.com/topics/Oil-drop_experiment

.

"Radioactivity." 1 Jun 2009.

http://library.thinkquest.org/17940/texts/radioactivity/radioactivity.html

.

"Radioactivity: Historical Figures." Access Excellence. Health Physics Society. 25 May 2009.

http://www.accessexcellence.org/AE/AEC/CC/historical_background.php

.

"Robert Andrews Millikan." Wikipedia. Web.28 May 2009.

http://en.wikipedia.org/wiki/Robert_Millikan

.

"Rutherford- Atomic Theory." Chemsoc Timeline. 1911. 21 May 2009.

http://www.rsc.org/chemsoc/timeline//pages/1911.html

.

"Rutherford's Experiment." Essential Chemistry. 21 May 2009.

http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/ruther14.swf

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"Rutherford's Experiment and Atomic Model." Encyclopedia of Science. Web.21 May 2009.

http://www.daviddarling.info/encyclopedia/R/Rutherfords_experiment_and_atomic_model.html

.

Zumdahl, Steven S. and Susan A. Zumdahl. Chemistry, 7th ed. Boston, Massachusetts: Houghton Mifflin Company, 2007.

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