Chapter 21, 22, & 23
Review Day!
What kind of bond would you
expect between 2 Oxygen atoms?
nonpolar covalent
 ionic
 metallic
 polar covalent

What kind of bond would you
expect between 2 Oxygen atoms?
nonpolar covalent
 ionic
 metallic
 polar covalent

Which set of coeffients balance the
following chemical equations?
Na + Cl2  NaCl




2,1,1
1,2,1
2,3,1
2,1,2
Which set of coeffients balance the
following chemical equations?
Na + Cl2  NaCl




2,1,1
1,2,1
2,3,1
2,1,2
How many electrons are shared in
a double covalent bond?
2
6
1
4

How many electrons are shared in
a double covalent bond?
2
6
1
4

What type of chemical bond would
you expect between a calcium and
chlorine atom?
Metallic
 Ionic
 Polar covalent
 Nonpolar covalent

What type of chemical bond would
you expect between a calcium and
chlorine atom?
Metallic
 Ionic
 Polar covalent
 Nonpolar covalent

The alkali metals tend to form 1+
while the alkali-earth metals tend
to form 2+ because
The charges of these ions corresponds to
the number of valence electrons that may
be lost
 The ion an atom forms is always equal to
the group number
 This is a random occurrence
 Alkali metals are less massive

The alkali metals tend to from 1+
while the alkali-earth metals tend
to from 2+ because
The charges of these ions corresponds to
the number of valence electrons that may
be lost
 The ion an atom forms is always equal to
the group number
 This is a random occurrence
 Alkali metals are less massive

If Aluminum ions have a 3+ charge
and oxygen ions have a 2- charge,
the compound aluminum oxide is
Al6O6
 Al4O3
 Al3O2
 Al2O3

If gallium ions have a 3+ charge
and sulfur ions have a 2- charge,
the compound Aluminum oxide is
Al6O6
 Al4O3
 Al3O2
 Al2O3

If calcium has a 2+ charge and
oxygen has a 2- charge, what is the
formula for calcium oxide?
Ca4O2
 CaO
 Ca2O2
 Ca2O4

If magnesium has a 2+ charge and
oxygen has a 2- charge, what is the
formula for calcium oxide?
Ca4O2
 CaO
 Ca2O2
 Ca2O4

The greater the difference in
electro negativity between two
covalently bonded atoms,
The closer together the atoms are located
on the periodic table
 The greater the polarity
 The smaller the polarity
 Two of the above are correct

The greater the difference in
electro negativity between two
covalently bonded atoms,
The closer together the atoms are located
on the periodic table
 The greater the polarity
 The smaller the polarity
 Two of the above are correct

Which set of coeffients balance the
following chemical equation?
C3H8 + O2  CO2 + H2O
1,3,3,1
 3,5,3,4
 1,5,3,4
 1,5,3,1

Which set of coeffients balance the
following chemical equation?
C3H8 + O2  CO2 + H2O
1,3,3,1
 3,5,3,4
 1,5,3,4
 1,5,3,1

The images below show particles in
three phases. What are they from
left to right?
Gas, liquid, solid
 Solid, liquid, gas
 Solid, gas, liquid
 Liquid, gas, solid

The images below show particles in
three phases. What are they from
left to right?
Gas, liquid, solid
 Solid, liquid, gas
 Solid, gas, liquid
 Liquid, gas, solid

Gases are so much easier to
squeeze into smaller volumes than
liquids or solids because
They are always warmer than liquids or
solids
 There is so much space in between the
submicroscopic particles
 They are so much lighter
 Their atoms or molecules are already
moving at high speeds

Gases are so much easier to
squeeze into smaller volumes than
liquids or solids because
They are always warmer than liquids or
solids
 There is so much space in between the
submicroscopic particles
 They are so much lighter
 Their atoms or molecules are already
moving at high speeds

The phase in which atoms and
molecules no longer move is
Gas
 Liquid
 Solid
 none

The phase in which atoms and
molecules no longer move is
Gas
 Liquid
 Solid
 none

When two different elements
combine to form a compound, the
resulting properties of the
compound are
Predictable based upon the nature of the
combining elements
 Not necessarily anything like those of the
elements
 Most like the element given in the greatest
amount
 About the average of the properties of the two
elements

When two different elements
combine to form a compound, the
resulting properties of the
compound are
Predictable based upon the nature of the
combining elements
 Not necessarily anything like those of the
elements
 Most like the element given in the greatest
amount
 About the average of the properties of the two
elements

What type of chemical bond would
you expect between 2 neon atoms?
Covalent
 Ionic
 Metallic
 None of the above

What type of chemical bond would
you expect between 2 neon atoms?
Covalent
 Ionic
 Metallic
 None of the above

Which of the set of coefficients
balance the following equation?
BaCl2+ NaOH  NaCl +
 1,2,1,1
 1,2,2,2
 1,2,2,1
 2,1,2,1
Ba(OH)2
Which of the set of coefficients
balance the following equation?
BaCl2+ NaOH  NaCl +
 1,2,1,1
 1,2,2,2
 1,2,2,1
 2,1,2,1
Ba(OH)2
Which of the below shows a
mixture?
A
A
B
C
D

B
C
D
Which of the below shows a
mixture?
A
A
B
C
D

B
C
D
Which set of coefficients balance
the following chemical equation?
CaBr2
+
 3,2,1,6
 3,2,2,6
 3,1,2,6
 3,3,1,6
Na3P
Ca3P2
+ NaBr
Which set of coefficients balance
the following chemical equation?
CaBr2
+
 3,2,1,6
 3,2,2,6
 3,1,2,6
 3,3,1,6
Na3P
Ca3P2
+ NaBr
Which set of coefficients balance
the following chemical equation?
NaF 
2,1,2
 2,2,1
 1,2,2
 1,2,1

Na
+
F2
Which set of coefficients balance
the following chemical equation?
NaF 
2,1,2
 2,2,1
 1,2,2
 1,2,1

Na
+
F2
If Na is +1 and CrO4 is -2, the
compound’s formula is
NaCrO4
 Na2CrO4
 Na(CrO4)2
 Na2(CrO4)2

If Na is +1 and CrO4 is -2, the
compound’s formula is
NaCrO4
 Na2CrO4
 Na(CrO4)2
 Na2(CrO4)2

How does a solid phase differ from
a liquid phase on the molecular
level?
The molecules of a solid are always more
compact
 The molecules of a solid are fixed, while the
molecules of a liquid are mobile
 There are molecular attractions in the solid
phase but not to the liquid phase
 Solids have crystalline structure while liquids are
amorphous

How does a solid phase differ from
a liquid phase on the molecular
level?
The molecules of a solid are always more
compact
 The molecules of a solid are fixed, while the
molecules of a liquid are mobile
 The are molecular attractions in the solid phase
but not to the liquid phase
 Solids have crystalline structure while liquids are
amorphous

What elements tend to form ionic
bonds?
Those found in the upper right hand side
of the periodic table
 Metallic elements
 Elements found on opposite sides of the
periodic table
 Any two elements of the same phase can
form an ionic compound

What elements tend to form ionic
bonds?
Those found in the upper right hand side
of the periodic table
 Metallic elements
 Elements found on opposite sides of the
periodic table
 Any two elements of the same phase can
form an ionic compound

Which set of coefficients balance
the following chemical equation?
Li3PO4
 1,3,2,1
 1,3,2,2
 1,2,4,4
 1,3,1,2
 Li
+
P
+
O2
Which set of coefficients balance
the following chemical equation?
Li3PO4
 1,3,2,1
 1,3,2,2
 1,2,4,4
 1,3,1,2
 Li
+
P
+
O2
During a chemical reaction
Old atoms disappear to be replaced by
new ones
 Old atoms transform into new ones
 Old atoms stick around merely switching
partners
 None of the above

During a chemical reaction
Old atoms disappear to be replaced by
new ones
 Old atoms transform into new ones
 Old atoms stick around merely switching
partners
 None of the above

What type of chemical bond would
you expect between a Carbon and
an Oxygen?
Polar covalent
 Nonpolar covalent
 Metallic
 Ionic

What type of chemical bond would
you expect between a Carbon and
an Oxygen?
Polar covalent
 Nonpolar covalent
 Metallic
 Ionic
