Name ______________________________ Period _______ Date _____________________
Chemical Bonds: Honors Study Guide
Chapters 7-9
1. Define ionic bond. What type of atoms form an ionic bond?
A chemical bond formed when atoms TRANSFER valence electrons to reach stability.
Occurs between a metal and a nonmetal.
2. Define covalent bond. What type of atoms form a covalent bond?
A chemical bond formed when two atoms share electrons (uncharged). Occurs
between two or more nonmetals
3. What is an ion?
An ion is an electrically charged atom. Atoms that lose electrons are positively charged
ions. Atoms that gain electrons are negatively charged ions.
4. Give reasoning to the fact that sodium bonds so well with chlorine. What type of bond do they
make?
Sodium loses one electron very easily because it can be found in group 1 and only
contains 1 valence electron. Chlorine gains one electron very easily because it can be
found in group 17 and has 7 valence electrons. Chlorine only needs one more electron
to reach stability.
5. Due to the cold weather and the fall harvest of pumpkins, your mom decides to bake you a
pumpkin pie.
 The dough for the crust of the pie consists of butter, flour, water and a few other
ingredients. After the dough is put in the oven, it becomes hard and turns golden
brown. Is this an example of a physical or chemical change? Explain.
This would be considered a chemical change. The original mixture of ingredients would
be physical, but once the dough is put in the oven the change in color and odor
indicates that a chemical change has taken place.

Before the filling can be made the pumpkin needs to be cut in half so that the seeds can
be removed. Is this an example of a physical or chemical change? Explain.
Cutting the pumpkin is a physical change. The pieces are still pumpkin and have not
been changed into a new substance.
6. What type of bond would be created if Potassium (K) and Bromine (Br) bonded? Ionic Bond
a. Create the bond for Potassium + Bromine
K
Br
7. What type of bond would be created if Chlorine (Cl) and Chlorine (Cl) bonded? Covalent
Bond
b. Create the bond for Chlorine + Chlorine
Cl
Cl
8. Create an electron dot diagram for the following:
Phosphorus
Xenon
P
9. Create a Bohr’s Model for Magnesium:
Xe
10. On the line provided identify whether the following chemical formulas follow the law of
conservation of mass. If they are unbalanced and do not follow the law show your work to
balance them.
 CH4 + 2O2
CO2 + 2H2O
Balanced and follows the law
conservation of mass

R
A
P
1
C
1
4
H
4
4
O
4
CF4 +2 Br2
CBr4 + 2F2 Unbalanced and does not follow law of
conservation of mass
R
A
P
1
C
1
4
F
2
2
Br
4
11. Identify the name of the following ionic compounds:
 KF Potassium Fluoride
 BaO Barium Oxide

CaF2 Calcium Fluoride
12. Write the ionic bond (formula) for the following ionic bonds:

Barium Sulfide BaS

Sodium Iodide NaI

Potassium Sulfide K2S