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The Nuclear Model of the
Atom
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Printed: September 19, 2015
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C HAPTER
Chapter 1. The Nuclear Model of the Atom
1
The Nuclear Model of the
Atom
Lesson Quiz
Name___________________ Class______________ Date________
Multiple Choice:
1. Dalton had a better idea of the atom than Democritus because
a.
b.
c.
d.
Dalton was smarter
Dalton had studied more science
Democritus did no experiments
Dalton had a better lab
2. A cathode ray tube emits
a.
b.
c.
d.
protons and electrons
electrons only
protons only
neither protons or electrons
3. Thomson showed the cathode ray had mass by using a
a.
b.
c.
d.
electronic balance
magnet
electric current
paddle wheel
4. Rutherford used _______ foil to study atomic structure.
a.
b.
c.
d.
aluminum
lead
gold
platinum
5. Millikan’s ______ drop experiments helped determine some properties of the electron.
a.
b.
c.
d.
water
oil
octane
propane
6. A neutron has a charge of
a.
b.
c.
d.
+1
-1
0
-2
7. What did Eugene Goldstein first call protons?
a. channel rays
b. canal rays
1
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c. cathane rays
d. chain
8. In the “plum pudding” model of the atom, the electrons were
a.
b.
c.
d.
mixed in the nucleus with the protons
orbiting around the protons
layered on the surface of the proton mass
surrounded by the protons
9. The plum pudding model was proposed by
a.
b.
c.
d.
Eugene Goldstein
Robert Millikan
Ernest Rutherford
J.J. Thomson
10. Rutherford’s atomic model became known as the ______ model.
a.
b.
c.
d.
neutron
nucleus
nuclear
noodle
True/False:
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
_____ Dalton assumed that atoms could be further divided.
_____ The electron and the neuron have essentially the same mass.
_____ The Rutherford model of the atom came after the Thomson model.
_____ The charge on the neutron is zero.
_____ The electron has a mass 1/1840 of that of the proton.
_____ Millikan originally called the electron a corpuscle.
_____ Goldstein discovered the proton.
_____ Most alpha particles were not deflected by the gold foil.
_____ Rutherford concluded that the electrons deflected the alpha particles.
_____ Electrical charges are carried by particles of matter.
Fill in the Blank:
21. Millikan’s studies measured the ______ of an electron.
22. A cathode ray tube has ______ at either end of the tube.
23. Cathode rays were deflected __________ a negatively charged metal plate and ________ a positively charged
plate.
24. The _______ is a positively charged subatomic particle that is present in all atoms.
25. An alpha particle is about _____ times the size of a hydrogen atom.
26. A small number of alphas particles bounced off the gold foil at ___________ angles.
27. The unique _____ and _________ of subatomic particles gives each element its specific identity.
28. The ________ was the first subatomic particle discovered.
29. The cathode ray travels from the ______ to the __________.
30. __________ charges attract one another.
Short Answer:
31. How did the discovery of the electron lead to other discoveries about the atom?
32. How would Thomson have interpreted the gold foil experiment to support his “plum pudding” model?
2