December 17, 2013
Answer
Question 1
What is the difference between an ionic
bond and covalent bond?
Ionic bond- electron transfer between a metal and a
non metal
Covalent bond- sharing of electrons between two or
more non metals.
Question 2
What makes a metallic bond unique?
Explain how this relates to malleability and
conductivity.
Answer
Metallic bond- electrons are free to float around in a
"sea of electrons" between the metal cations. This
allows for greater flexibility when applied with a force
and allows it to move those electrons around to conduct
electricity.
Answer
Question 3
Draw the electron transfer and formula unit
for the following elements:
Ca and Cl
Transfer of electrons:
Ions formed: Ca+2 and 2[Cl-]
Formula Unit: CaCl2
December 17, 2013
Question 4
Answer
Draw the Lewis Structure of the following:
1) C2H4
2) NCl3
Question 5
Define a resonance structure and draw all
possible resonance structures of sulfite.
Question 6
What does the term coordination number
refer to in a crystal?
Answer
A resonance structure is one in which you can have
more than one valid structure using the same number of
valence electrons.
Answer
Coordination number refers to the number of ions of
oppositely charged particles that surround an ion in a
crystal.
BCC-8
FCC-8
HCP-12
December 17, 2013
Answer
Question 7
List the 7 diatomic molecules. Then
determine which one is held together by a
triple bond.
Question 8
What is a coordinate covalent bond?
Question 9
An unknown white solid was tested and
determined to have a low melting point and
not conduct any electricity. Predict whether
this was an ionic or covalent bond.
Mr. BrINClHOF
Br2, I2, N2, Cl2, H2, O2, F2
nitrogen is held together by a triple bond
Answer
Coordinate covalent bond: one in which one atom
contributes both bonding electrons. (example: CO)
Answer
Covalent Bond
December 17, 2013
Question 10
Answer
Which of the following compounds expands
to include 12 electrons in its octet?
SF6; allows for expansion with the d sublevel
1) SF6
2) PCl5
Question 11
•
•
•
•
Write the names for the following
compounds:
Na3N
CaF
P2O5
CCl3
Answer
• Na3N- sodium nitride
• CaF- calcium fluoride
• P2O5- diphosphorus pentoxide
• CCl3- carbon dichloride
Question 12 (HONORS)
•
•
•
•
Write the formulas for the following
compounds:
lithium sulfide
dinitrogen pentoxide
beryllium fluoride
iron (III) sulfide
Answer
• lithium sulfide- Li2S
• dinitrogen pentoxide- N2O5
• beryllium fluoride- BeF2
• iron (III) sulfide- Fe2S3
December 17, 2013
Question 12 (regular)
•
•
•
•
Write the formulas for the following
compounds:
lithium sulfide
dinitrogen pentoxide
beryllium fluoride
nitrogen triiodide
Question 13 (HONORS)
What is the process for determining the best resonance
structure? Then determine the best structure of the
following:
Answer
• lithium sulfide- Li2S
• dinitrogen pentoxide- N2O5
• beryllium fluoride- BeF2
• nitrogen triiodide- NI3
Answer
• Process= Formal Charge
December 17, 2013