Review Packet Unit 2 Exam
Name____________________________
Date________________Per__________
Know the following:
 How to draw a Bohr Model of the atom for both atoms and ions
 How to determine how many valence electrons and atom has
 How to determine if an atom will gain or lose electrons to make a
stable configuration
 When an atom makes a stable configuration what does its electron
configuration resemble?
 How to write electron configurations for atoms and ions
 How to predict how many unpaired electrons an atom has available
for bonding (orbital filling diagrams)
 How is the Periodic Table arranged?
 What are characteristics of metals, non-metals, semi-metals?
 What trends appear in groups and periods as a result of how the
Periodic Table is arranged?
 How to predict the characteristics of an element based on its
position in the Periodic Table.
 How to write a neutral compound formed from cations and anions
 How to name a compound and how to write the formula of a
compound from its name
 How to name acids
 Who are the important scientists in the discovery of atoms and
their structure?
 Who discovered the proton? What is the experiment associated
with that discovery?
 What is the Plum Pudding Model?
 Who is Democritus?
 What is the wave model of the atom?
 What was the debate between Einstein and Bohr?
 Who won? What do we now know about electrons?
Practice Problems:
1. Draw
a.
b.
c.
d.
the Bohr Model of the atom for the following:
S
S2Na
Na+
2. What is the Octet Rule?
3. Write the electron configuration for the following:
a. S_____________________________________________________
b. S2-___________________________________________________
c. Ca__________________________________________________
d. Ca2+________________________________________________
4. Look at the electron configuration for 3b and 3d. If those
configurations represented a neutral atom what atom would they
represent?
5. Write the electron configuration for the following?
a. Au_________________________________________________________
b. Cd_________________________________________________________
c. Eu_________________________________________________________
6. How many unpaired electrons for the following? Show orbital filling
diagram.
a. Co
b. Al
c. C
7. What is the trend for atomic radius?
8. What is the trend for metallic properties?
9. What is ionization energy? What is the trend?
10.
What is electronegativity? What is the trend?
11.
Which atom or ion is bigger?
a. C or Ne
b. Na or S
c. Cu or Cu2+
d. P or P3-
12.
Which atom has the largest ionization energy?
a. Y or Lr
b. Cd or Sn
c. K or Kr
13.
Which atom has the lowest electronegativity?
a. Al or Ar
b. In period 5
c. In group 5
14.
Which atom is the most metallic?
a. Na or Al
b. Ca or Ra
c. F or At
Naming
Name the following compounds:
1. CaCO3_________________________________________
2. N2O5________________________________________________
3. RbF_________________________________________________
4. Fe3(PO4)2______________________________________________
5. CCl4________________________________________________
6. CuS________________________________________________
7. ZnCl2_______________________________________________
8. Ag2O_____________________________________________
9. NO________________________________________________
10.
NaClO3____________________________________________________
Write the formula from the name:
1. calcium chloride__________________________________________
2. cadmium oxide_____________________________________________
3. nickel(II) sulfate____________________________________________
4. sodium acetate______________________________________________
5. dinitrogen monoxide________________________________________
6. silicon dioxide______________________________________________
7. beryllium nitrate_________________________________________
8. iron (III) phosphide_______________________________________
9. chromium (IV) sulfide_____________________________________
10.
sulfur hexafluoride__________________________________
Name the following acids or write the formula from the name:
1. HCl_______________________
6. hydrosulfuric acid_________
2. H2SO4____________________
7. hydronitric acid___________
3. HNO2_____________________
8. chloric acid_______________
4. HNO3_____________________
9. chlorous acid______________
5. HF_______________________
10. acetic acid_________________