Name _______________________
Period _______
Chapter 4 Review Pack
Section 1: Atomic Structure
1. Fill in table below:
Subatomic Particle
Proton
Neutron
Electron
Location
Mass
Charge
2. Atomic mass = the number of ___________ and ___________
3. Atomic number = the number of _____________
4. The number of protons _____ the number of electrons in a neutral atom.
Section 2: Isotopes
5. Identify one way isotopes are the same and one way they are different.
Similar
Different
6. Use the information below to solve the missing information and calculate the atomic
mass.
Isotopic
Symbol
Name
Percent
Abundance
32
16
S
_____________
95.02
33
16
S
_____________
0.75
34
16
S
_____________
4.21
36
16
S
_____________
0.02
Calculated Atomic Mass = _______________
Atomic Mass on Periodic Table = _______________
Section 3: Nuclear Chemistry
7. Write the name and formula for the four nuclear particles.
8. Balance the following Nuclear Reactions:
231
90Th
31
14Si
142
--- >3115P+ + ____
61Pm
235
92U
--- > 0+1e + ___
_____ --- > 14260Nd
+ 10n --- > 13752Te +
_____ + 210n
9. Write the balanced nuclear reactions for the following:
I-131 to Xe-131
Np-337 goes through an alpha decay followed by a beta decay followed by two more
alpha decays.
10.
100
46Pd
has a half life of 4.0 days. How much time is required for 200 g of this
isotope to decay to 25 g?
11. How much of a 300 g sample of
183
76
Os will remain after sitting for 3 days? (half-
life = 24 hrs)
12. What is the half-life of sodium-24 if a 12 gram sample decays to 3 grams in 30
hours?
Section 4: Periodic table
13. What is the group name for the following elements?
Copper _________
Krypton _________
Beryllium _________
Rubidium _________
Chlorine _________
Titanium _________
14. Determine if the following are metals, non-metals, or metalloids then determine
which state of matter it is at room temperature?
Bromine
_________
_________
Germanium
_________
_________
Neon
_________
_________
Cobalt
_________
_________
15. Determine the number of valence electrons for each of the following elements:
Xenon _________
Antimony_________
Rubidium _________
Thallium _________
16. Determine the charge each of the atoms will have if they become an ion:
Calcium _________
Sulfur_________
Arsenic _________
Chlorine _________
17. What is the name of the following ions?
Na+1
N-3
18. Why is fluorine reactive by neon is not?
19. The vertical columns on the periodic table are called _____________________.
20. The horizontal rows on the periodic table are called ______________________.
21. Elements in the same _____________ share similar chemical properties because
they have the same number of ________________________.
22. Fill in the table below
Symbol
Atomic
mass
Atomic
number
# protons
# electrons
20
10Ne
47
20
11
133
55Cs
+1
18
11
# neutrons