Name___________________________
Date______________
14
#
ATOM TEST REVIEW
The test will consist of 50 multiple choice questions with an additional 5 multiple choice
questions that are extra credit. The test is out of 100 points.
Study all your notes and practice sheets to make sure you know all the info.
1. Draw a timeline below of the history scientist’s ideas about the atom.
Include for each the following:
a) a picture of what people thought atoms looked like at each of the major points in
history
b) a description at each of the points in history of what new idea(s) about atoms were
developed.
c) The names of the scientists famous for their contributions
d) The general time period that each new idea about atoms came about
________________________________________________________________________
500 B.C.
300 B.C.
1600
________________________________________________________________________
1600
1700
1800
________________________________________________________________________
1800
1900
2000
2. What did Rutherford do to find out that atoms are mostly empty space?
3. Describe each of the particles in an atom:
Subatomic particle
Location
a.
inside nucleus
Charge
Mass(amu)
1+
b. neutron
c.
1
1-
0
4. Draw a picture of a Helium atom
5. Draw a picture of the box from the periodic table for Carbon
6. In the box above, label the element symbol, atomic number, and atomic mass.
7. Describe what the pieces of information in the periodic table boxes tell you about an
element:
Symbol:
Atomic number:
Atomic mass:
8. How is an ion different than a regular atom?
9. What are isotopes?
10. If I write carbon-12 and carbon-14, what do the numbers after the “carbon” represent?
11. How can I figure out the number of protons, neutrons, and electrons in any atom, ion
or isotope?
Protons:
Neutrons:
Electrons:
12. How do I use the numbers in the following to figure out the number of protons,
neutrons, and electrons?
36
Cl-1
17
13. What makes a nucleus want to come apart?
14. What FORCE makes a nucleus want to stay “glued’?
15. Large atoms don’t have enough neutrons to keep the nucleus glued together. What are
these atoms called?
16. Describe the three types of radioactive decay:
Symbol
Charge
Mass
Penetrating Ability
Alpha:
Beta:
Gamma:
17. Find the average atomic mass of carbon-12 and carbon-14 if the relative abundance
respectively is 20% and 80%.
18. Find the average atomic mass of hydrogen-1, hydrogen-2, and hydrogen-3 if the
relative abundance respectively is 90%, 5%, and 5%.
19. Find the average atomic mass of helium-4 and helium-5 if the relative abundance
respectively is 30% and 70%.
20. Write carbon in correct symbolic notation:
21. Write carbon-14 in correct symbolic notation:
C
C
22. Explain how carbon-14 can be used for radiocarbon dating even though it is
radioactive.
23. Draw a picture of how electrons really travel around the nucleus.
(Not planetary model)
24. What atomic number do elements become radioactive? Why?
25. Draw a picture of a chain reaction of uranium in a nuclear power plant:
****Know the Model of the Atom Lab, Average Atomic Mass Lab and the Radioactive Decay Lab –
5 questions over these three labs. Study the worksheets over these labs*****