Name: _________________
STUDY GUIDE ATOMIC STRUCTURE AND NUCLEAR CHEMISTRY
1. The nucleus of the atom is made up of __________ and __________.
2. The masses of the subatomic particles are: electrons ____ protons ____ neutrons _______.
3. Electrons are found in the __________ _____________.
4. The charges of the subatomic particles are: electrons ___ protons ____ neutrons _______.
5. What is an ion? _____________________________________________________________
Give an example of an ion: ___________
6. Protons and neutrons are found in the _____________________
7. What is an isotope? ___________________________________________________________
Give an example of isotopes. _______________________
8. Distinguish between mass number and average atomic mass.
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9. Fill in the following chart:
Atom or
Ion?
Chemical
Symbol
Name
Atomic
Mass
Number number
14
# of
Protons
# of
Neutrons
# of
Electrons
Mg ²⁺
Chlorine
60
Arsenic
37
36
33
36
10. Calculate the average atomic mass for neon if its abundance in nature is 90.5% neon-20,
0.3% neon-21, and 9.2% neon-22.
11. Calculate the average atomic mass of silver if 13 out of 25 atoms are silver-107 and 12 out
of 25 atoms are silver-109. (calculate abundance first).
Overall
Charge
12. What are the six parts of Dalton’s Atomic Theory?
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13. Illustrate the Bohr Planetary Model of the atom and the electron cloud model of the atom.
14. Why do atoms undergo radioactive decay? _____________________________________________
15. What will stop the following types of particles? Alpha _________ Beta ________ Gamma _______
16. Write the nuclear symbol for Uranium-238:
17. Write an equation for the alpha decay of Uranium-239.
18. Write an equation for the beta decay of Bismuth-207.
19. What is the symbol for a gamma particle? ______ a Beta particle? _______ an Alpha particle? ____
20. What is half-life?
21. An atom has a half-life of 12 years. If you start with a 500g sample, how much is left after 72 years?
22. What is the difference between fission and fusion?
23. Give an example of where fission reactions are used. _____________ Fusion reactions. __________
24. Naturally occurring carbon consists of three isotopes, 12C, 13C, and 14C. State the number of
protons, neutrons, and electrons in each of these carbon atoms.
12C
13C
14C
6
6
6
#P _______ _______ _______
#N _______ _______ _______
#E _______ _______ _______
25. What does it mean if something is radioactive? __________________________________________
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