Chemical Bonding: 1.5.16
Due:
 Classroom Rules Contract Review
Objectives:
 I can distinguish between ionic and covalent
compounds. Read and complete Venn
Diagram
 Work on Periodic Table Review Packet
Chemical Compounds Venn Diagram
Ionic Compounds
Covalent Compounds
Similarities
Chemical Bonding: 1.7.16
Due:
 Chemical Activity of Elements Worksheet
Objectives:
 I can identify which elements are most active
and predict how they will become stable.
 I can distinguish between the types of chemical
bonds.
 I can illustrate chemical bonding between
elements using the Lewis Dot structures.
Chemical Activity
 Occurs when an element is not stable.
 How can an element become stable?
Octet Rule: Elements will gain, lose, or share
valence electrons to reach stability.
 Creates chemical bonds between atoms.
 This is why there is more compounds in nature
than elements.
Chemical Activity Worksheet
 Assessed homework with key and
addressed questions.
Chemical Activity and Size of Atom
• The most active metals lose valence electrons the easiestlargest in size.
• The most active non-metals gain valence electrons the easiestsmallest in size.
Chemical Bonding
Most Common Types of Bonding:
1.
2.
Ionic Bonding
 Transfer of valence electrons from a metal
atom to a non-metal atom.
 Creates a metal ion (cation) and non-metal
ion (anion) that are held together by
attractive forces (chemical bond)
 Chemical bonds are also called
intramolecular forces.
 Formation of Ionic Compounds
Intramolecular Forces
 The ionic bond
 The attractive force between the metal and
non-metal ions in the compound.
+
Na ---------Cl
Chemical Bonding: Bell Ringer-Key
1. Classify as ionic or covalent.
a. CH4
b. CuO
c. PBr3 d. K3N e. O2
(covalent) (ionic) (covalent) (ionic) (covalent)
2. Explain if CaCl2 (ionic) or C6H12O6 (covalent)
would have the following physical properties:
a. conduct electricity? ionic-CaCl2
b. have a lower melting point? covalent- C6H12O6
c. crystallize faster out of solution? ionic- CaCl2
d. considered brittle ionic- CaCl2
Ionic Bonding (Lewis Dot Transfer)
Metal
(Lewis
Dot)
Non-metal
(Lewis Dot)
Ionic Bonding
(Lewis Dot Transfer)
Chemical
Formula
Lewis Dot Structures
http://www.roymech.co.uk/Related/Chemistry/Lewis_dot_structure.html
Homework: Chemistry I
 Complete Ionic Bonding Packet
 Review Polyatomic Ions-quiz later next week.
Chemical Bonding: 1.11.16
Due:
 Ionic Bonding Worksheet
Objectives:
 I can distinguish between the types of chemical
bonds.
 I can illustrate chemical bonding between
elements using the Lewis Dot structures.
 Review Polyatomic ions-quiz on Thursday
Ionic Bonding (Lewis Dot Transfer)
Metal
(Lewis
Dot)
Non-metal
(Lewis Dot)
Ionic Bonding
(Lewis Dot Transfer)
Chemical
Formula
Ionic Bonding (Lewis Dot Transfer)
Metal
(Lewis
Dot)
Non-metal
(Lewis Dot)
Ionic Bonding
(Lewis Dot Transfer)
Chemical
Formula
Ionic Compounds
 The overall charge on any ionic compound is
always zero.
 The ratio of metal to non-metal ions has to equal
zero
Chemical Bonding
Most Common Types of Bonding:
1.
2.
Covalent Bonding : Lewis Dot Sharing
A covalent compound is also called a molecule.
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Chemical Bonding: 1.13.16
Due:
 Covalent Bonding Worksheet
 Ionic vs. Covalent Properties Lab-read
procedures
Objectives:
 I can illustrate chemical bonding between
elements using the Lewis Dot structures.
 I can classify compounds based on their
physical properties.
 Quiz on Friday: Polyatomic Ions/Cmpds.
Covalent Bonding : Lewis Dot Sharing
A covalent compound is also called a molecule.
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Covalent Bonding : Lewis Dot Sharing
A covalent compound is also called a molecule.
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Primary Phase Changes
Covalent Bonding : Lewis Dot Sharing
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Chemical Bonding:
Explain what kind of bonding is being illustrated in
each molecule below.
Example A :
Example B:
Chemical Bonding:
Explain what kind of bonding is being illustrated in
each molecule below.
Example A :
Example B:
Ionic vs. Covalent Properties Lab
 Purpose:
* To classify compounds based on their unique
physical properties.
Chemical Bonding: 1.14.16
Infinite Campus:
 Ionic Bonding Packet (12pts.)
Due:
 Covalent Bonding Worksheet
Objectives:
 I can illustrate chemical bonding between
elements using the Lewis Dot structures.
 I can classify compounds based on their
physical properties.
 Quiz on Friday: Polyatomic Ions/Cmpds.
Chemical Bonding Quiz
(multiple choice format)
*Polyatomic Ions
*Classifying Ionic and Covalent Compounds
AND their properties (Venn Diagram).
*Illustrating Ionic Bonding and Covalent Bonding
Covalent Bonding : Lewis Dot Sharing
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Covalent Bonding : Lewis Dot Sharing
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Chemical Bonding: Homework
 Complete Covalent Bonding Worksheet
 Review Chemical Bonding Notes
 Review Polyatomic Ions
Chemical Bonding: 1.27.16
Infinite Campus:
 Chemical Bonding Quiz (15pts.)
Objectives:
 I can illustrate chemical bonding between
elements using the Lewis Dot structures.
 I can classify compounds based on their
physical properties.
• I can use electronegativity values to predict
what type of bond is formed between atoms in a
compound.
Chemical Bonding Quiz
Question Missed
Why did I miss it?
Do you understand it?
Chemical Bonding: 1.29.16
Due:
Electronegativity Questions
Objectives:
 Review Chemical Bonding Quiz
 I can classify compounds based on their
unique physical properties.
Ionic vs. Covalent Cmpds. Properties 2nd
Properties
Solubility
Which are
Soluble?
Crystal
Growth
Fastest:
Slowest:
Electrical
Conduction
Which
conducted
electricity?
Melting
point time
Fastest :
Slowest:
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
Chemical Bonding/Properties Lab
Unknown Sample Ionic or
Covalent?
Sample’s Identity Sample’s
Chemical
Formula
Chemical Bonding Quiz
Chemical Bonding/Properties Lab
Unknown Sample Ionic or
Covalent?
Sample’s Identity Sample’s
Chemical
Formula
Ionic vs. Covalent Cmpds. Properties 2nd
Properties
Solubility
Which are
Soluble?
Crystal
Growth
Fastest:
Slowest:
Electrical
Conduction
Which
conducted
electricity?
Melting
point time
Fastest :
Slowest:
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
Ionic vs. Covalent Cmpds. Properties 3rd
Properties
Solubility
Which are
Soluble?
Crystal
Growth
Fastest:
Slowest:
Electrical
Conduction
Which
conducted
electricity?
Melting
point time
Fastest :
Slowest:
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
Ionic vs. Covalent Cmpds. Properties 6th
Properties
Solubility
Which are
Soluble?
Crystal
Growth
Fastest:
Slowest:
Electrical
Conduction
Which
conducted
electricity?
Melting
point time
Fastest :
Slowest:
Grp 1
Grp 2
Grp 3
Grp 4
Grp 5
Grp 6
Grp 7
Chemical Bonding: 2.01.16
Infinite Campus:
 Ionic vs. Covalent Compounds Properties Lab
 Chemical Bonding Quiz II
Objectives:
 I can classify compounds based on their
unique physical properties.
 I can classify compounds based on their
electronegativity differences.
Chemical Bonding: 2.01.16-6th
Infinite Campus:
 Ionic vs. Covalent Compounds Properties Lab
Objectives:
 I can classify compounds based on their
unique physical properties.
 Chemical Bonding Quiz II
 I can classify compounds based on their
electronegativity differences.
Properties of Chemical Compounds
Does Covalent or Ionic Conduct Electricity when
dissolved in water?
7.2
Properties of Ionic Compounds
Ionic compounds can conduct an electric
current when melted or dissolved in water.
Properties of Chemical Compounds
•Do Ionic or Covalent Compounds create
crystals faster?
Collection of Ionic Compounds
Collection of Covalent Compounds
Properties of Chemical Compounds
7.2
 The orderly arrangement of atoms/ions
produces beautiful crystalline structure.
 Which compound from the lab produced crystals
faster/slower?

Ionic Compounds: Crystal Lattice
 Stronger attractive force between ions
 Faster crystal growth.
Covalent Compounds: Crystal Lattice
 Weaker attractive forces between covalent
compounds (molecules).
 Slower crystal growth.
o
o
C
C
o
o
C
http://iscience.ru/wpcontent/uploads/2008/12/sugar-molecule02.jpg
C
http://www.michigansugar.com/images/ag/
production/th_med_crystals.jpg
Melting Points of Compounds
 Which has a higher melting point?
 Does the table below prove or disprove your
conclusion from the lab? Explain your answer.
Chemical Compounds
Melting Point (oC)
Boiling Point (oC)
Cr2O3
2,266
4,000
SrF2
1,470
2,489
CCl4
-22.9
76.6
CH4O
-97.8
64.7
Chemical Compounds Article
Properties of Chemical Compounds
•Why do ionic compounds in general have
higher melting and boiling points?
Collection of Ionic Compounds
Collection of Covalent Compounds
Properties of Chemical Compounds
•Why do ionic compounds in general have
higher melting and boiling points?
stronger attractive forces between ions
Collection of Ionic Compounds
Collection of Covalent Compounds
Properties of Chemical Compounds
 Ionic Compounds are primarily solids at room
temperature.
 Molecules can be a solid, liquid, or gas at room
temp. Examples:
.
O2 and CH4
(C8H18)
(C8H8)
Properties of Chemical Compounds
•Which type of compound is more brittle when
stress is applied to it?
Collection of Ionic Compounds
Collection of Covalent Compounds
Properties of Ionic Compounds
 Ionic crystals are brittle when stress is applied.
 Repulsion increases when similar ions are force
together. +
+ - + - +
+ - + -
+
+
-+ - +-
http://www.chemguide.co.uk/atoms/structures/ionicstruct.html
Properties of Molecules
 Molecules are more resilient (durable) than
ionic compounds.
 Why?
http://www.chemguide.co.uk/atoms/structures/ionicstruct.html
Chemical Bonding: 2.02.16
Due:
 Chemical Bonding Review
Objectives:
 I can classify compounds based on their
electronegativity differences.
Chemical Compounds Venn Diagram2nd
Ionic Compounds
Covalent Compounds
Similarities
Chemical Compounds Venn Diagram3rd
Ionic Compounds
Covalent Compounds
Similarities
Chemical Compounds Venn Diagram6th
Ionic Compounds
Covalent Compounds
Similarities
Ionic Bonding (Lewis Dot Transfer)
Metal
(Lewis
Dot)
Non-metal
(Lewis Dot)
Ionic Bonding
(Lewis Dot Transfer)
Chemical
Formula
Covalent Bonding : Lewis Dot Sharing
Molecular
Formula
Lewis Dot Sharing
Molecular Structure
Electronegativity
• The degree of attraction one atom’s protons has toward another
atom’s valence electrons during bonding.
• It can predict the type of bond formed between two atoms.
Electronegativity Values
webassign.net
Chemical Bonding :
Electronegativity Difference
Covalent Bonds
Polar Bonds: Where atoms do NOT share bonded
electrons equally. Usually 2 different elements
making up the bond. Ex. N----F bond
Non-Polar Bonds: Where atoms share bonded
electrons equally or very close to it. Usually same
elements.
Ex. O-----O
Prentice Hall KY Teacher Express, 2008
Chemical Bonding and Electronegativity
Chemical Formula
Classify
Compound:
• Ionic or Covalent
Bonds:
Ionic,
Polar,
Non-polar
(EN difference)
CO2
C---O
CI4
C----I
(carbon and iodine)
MgF2
Mg---F
N2
N----N
Na2O
Na---O
Chemical Bonding: 2.03.16
Due:
 Chemical Bonding and Electronegativity
Objectives:
 I can classify compounds based on their
electronegativity differences.
 I can distinguish between types of chemical
bonding.
Chemical Bonding and Electronegativity
Chemical Formula
Classify
Compound:
• Ionic or Covalent
Bonds:
Ionic,
Polar,
Non-polar
(EN difference)
CO2
C---O
CI4
C----I
(chlorine and iodine)
MgF2
Mg---F
N2
N----N
Na2O
Na---O
Water is a universal solvent
en.wikipedia.org
Polar Covalent Bonds: Partial Charges
 Weaker attractive forces between covalent
compounds (molecules)
 Slower crystal growth.
o
o
C
C
o
o
C
http://iscience.ru/wpcontent/uploads/2008/12/sugar-molecule02.jpg
C
http://www.michigansugar.com/images/ag/
production/th_med_crystals.jpg
Metallic Bonding
Metallic Bonding:
Metal cations are attracted to sea of valence electrons.
How does this happen?
• The metal atoms will lose their valence electrons and become
cations.
• The free valence electrons are extremely mobile, constantly
moving between the metal cations.
• The metal cations are attracted to the free and mobile valence
electrons.
Covalent Bonding
Ionic Bonding