Unit #4: Bonding Exam Review:
1) Illustrate the ionic bonding that occurs between Potassium and Sulfur. (Hint: Determine the name of
the compound, then look up the charges, and determine the chemical formula. Once you determine
the chemical formula, use the numbers indicated in the formula to draw the ionic bonding that occurs.
Be sure to include the number of protons, neutrons, and electrons for each atom.
2) Identify the cation and anion from Question #1.
3) Illustrate the covalent bonding for the following atoms: (Hint: Draw the electron dot structures for
each atom, and then show how they combine.)
a) Bromine and Oxygen
b) Two Atoms of Hydrogen
c) Nitrogen and Fluorine
4) Give the name and chemical formula for each of the molecular compounds from Question #3. (Hint:
Use prefixes when naming molecular compounds.)
a) Bromine and Oxygen
b) Two Atoms of Hydrogen
c) Nitrogen and Fluorine
5) For the molecular compounds in Question #3, determine whether the compounds contained polar or
nonpolar bonds.
a) Bromine and Oxygen
b) Two Atoms of Hydrogen
c) Nitrogen and Fluorine
6) For the molecular compounds in Question #3, determine whether the compounds were polar or
nonpolar molecules.
a) Bromine and Oxygen
b) Two Atoms of Hydrogen
c) Nitrogen and Fluorine
7) Use the five steps to illustrate the covalent bonding for the following molecular compounds. (Hint:
These compounds will contain either double or triple bonds.)
a) Two Atoms of Nitrogen
b) Sulfur Trioxide
8) For the molecular compounds in Question #7, determine whether the compounds were polar or
nonpolar bonds.
a) Two Atoms of Nitrogen
b) Sulfur Trioxide
9) For the molecular compounds in Question #7, determine whether the compounds were polar or
nonpolar molecules.
a) Two Atoms of Nitrogen
b) Sulfur Trioxide
10) Describe the periodic trend for electronegativity. (Hint: The periodic trend is from left to right across
the periodic table.)
11) Describe the group trend for electronegativity. (Hint: The group trend is from top to bottom on the
periodic table.)
12) What is the most electronegative element on the periodic table?
13) Identify the following as either a binary compound or ternary compound:
a) MgCl2
b) AlPO4
c) Na2SO3
d) KCl
14) Identify the following as either a monoatomic ion or polyatomic ion:
a) Ca+2
b) SO4-2
c) Cl-1
d) PO3-3
15) Identify the following as either an ionic compound or molecule compound:
a) CO2
b) CaCl2
c) NH3
d) Al2O3
16) Ionic compounds are made up of a __________________ and a ___________________.
17) Covalent or molecular compounds are made up of two or more ___________________.
18) List the properties for ionic and molecular compounds:
Ionic Compounds:
Molecular Compounds:
19) Determine the name or chemical formula for the following acids:
a) HBr
b) HNO2
c) Hydrosulfuric Acid
d) Phosphoric Acid
20) Determine the name or chemical formula for the following molecular compounds. (Hint: Use prefixes
when naming.)
a) SO2
b) NO
c) NCl3
d) Tetraphosphorus Decoxide
e) Dinitrogen Heptoxide
f) Diphosphorus Pentoxide
21) Using charges, determine the chemical formula for the following ionic compounds:
a) Magnesium Phosphate
b) Iron (III) Hydroxide
c) Stannous Chloride
d) Magnesium Oxide
e) Lead (IV) Carbonate
f) Aluminum Sulfate
22) Name the following ionic compounds. (Hint: Do not use prefixes.)
a) NH4Cl
b) FeO
c) Hg2Cl2
d) Mg(C2H3O2)2
e) Sn(SO4)2
f) Na3PO4
23) What are the ten prefixes for naming molecular compounds?
24) When bonding occurs, what group on the periodic table does elements want to be like?
25) Explain the difference between an ionic compound and a molecular compound.
26) What type of bonding does ionic compounds undergo?
27) What type of bonding does molecular compound undergo?
28) How many electrons are shared in a single bond?
29) How many electrons are shared in a double bond?
30) How many electrons are shared in a triple bond?
31) Which of the seven diatomic molecules are held together by a single bond?
32) Which of the seven diatomic molecules are held together by a double bond?
33) Which of the seven diatomic molecules are held together by a triple bond?
34) Explain the difference between a cation and an anion.
35) Indicate whether the following ions are gaining or losing electrons, and how many that they are gaining
or losing:
a) K+1
b) O-2
c) Al+3
d) Ca+2
e) Cl-1
f) S-2
36) Identify how many valence electrons each of the following elements contain:
a) Sulfur
b) Potassium
c) Chlorine
d) Nitrogen
37) Define the following terms:
a) Ionic Bonding
b) Ion
c) Cation
d) Anion
e) Covalent Bonding
f) Electron Dot Structures
g) Valence Electrons
h) Octet Rule
i) Molecular Compound
j) Ionic Compound
k) Oxidation Number
l) Binary Compound
m) Ternary Compound
n) Polyatomic Ion
o) Electronegativity
p) Polar Bond
q) Nonpolar Bond
r) Polar Molecule
s) Nonpolar Molecule
t) Unshared Electron Pair