Covalent Bonding
• Objectives:
• Today I will be able to:
– Identify the properties Covalent Bonds (Day 1 and 2)
– Apply correct naming to covalent compound formulas (Day 1 and 2)
– Compare and Contrast ionic and covalent bonds (Day 2)
• Assessment:
– Formal Assessment
• Analyzing student responses to the Analyzing responses to the exit ticket,
covalent bonds webquest, covalent naming practice and Venn diagram.
– Informal Assessment
– Monitoring group interactions as students complete the covalent bond
webquest and the practice worksheets.
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Common Core Connections
Build Strong Content Knowledge
Demonstrate Independence
Use technology and digital media strategically and capably
Use appropriate tools strategically (pink sheet of ions)
Look for and express regularity in repeated reasoning
Lesson Sequence
• Day 1
• Warm – up
• Explain: Covalent
Compounds Notes
• Elaborate: Station 1 –
Covalent Compound
webquest OR Covalent
naming practice
• Formal/Informal Assessment
• Exit Ticket
– Formal Assessment
• Day 2
• Warm – Up
• Elaborate: Station 1 –
Covalent Compound
webquest OR Covalent
naming practice
• Formal/Informal Assessment
• Elaborate: Ionic vs. Covalent
Venn Diagram
– Formal Assessment
• Exit Ticket
– Formal Assessment
Warm Up (Day 1)
• What is the difference between a monoatomic
and a polyatomic ion?
• How do I name a ionic compound containing a
Polyatomic ion?
• What is the difference between an ionic and a
covalent bond?
Warm – Up (Day 2)
• What is a covalent bond?
• How could you tell apart the name of a
covalent compound vs. an ionic compound?
• Determine if the compound is ionic or
covalent
– Diphosphorous pentoxide
– Aluminum oxide
Objective
• Today I will be able to:
– Identify the properties Covalent Bonds (Day 1 and
2)
– Apply correct naming to covalent compound
formulas (Day 1 and 2)
– Compare and Contrast ionic and covalent bonds
(Day 2)
Homework
• Finish the work from whichever station that
you complete today in class!
Agenda
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Day 1
Warm – Up
Covalent Bonding Notes
Station 1
– Covalent Bonding
Webquest OR covalent
cmpds naming practice
• Exit Ticket
• Day 2
• Warm – Up
• Station 2
– Covalent Bonding
Webquest OR covalent
cmpds naming practice
– Travel to the station that
you did not do yesterday.
• Ionic vs. Covalent
Compounds Venn
Diagram
• Exit ticket
Day 1 Sequence
Covalent Bonding Notes
Covalent Bonds: Naming and
Properties
Covalent Bonds
• Formed by sharing of electrons between
atoms
• Typically between two or more nonmetals
– Ex. CH4
Covalent Bond Properties
• Low melting and boiling point
• Poor conductors
Covalent Bonds
• Electrons are not always shared equally
• Two types of covalent bonds
Polar
Nonpolar
Polar Covalent Bonds
• When one atom is more electronegative than
another, the shared electrons spend more
time around it
• Example: H2O
Nonpolar Covalent Bonds
• Electrons are shared equally
• Both atoms have similar electronegativities
• Example
– N2
Electronegativity Differences between
Bonds
Electronegativity
Difference
0.5 or less
Type of Bond
0.6 – 1.8
Nonpolar
Covalent
Polar Covalent
1.9 or greater
Ionic
Naming Covalent Compounds
Notes
Remember the prefixes????
Prefix
Number
Mono -
1
Di -
2
Tri -
3
Tetra -
4
Penta -
5
Hexa -
6
Hepta -
7
Octa
8
Nona-
9
Deca -
10
Naming covalent compounds
• For the first element, use the full name of the
nonmetal with a prefix denoting how many
atoms of that element
– If there is only one do not use the prefix
• For the second element change the ending to the
suffix –ide, use a prefix to denote how many
atoms that are present
• Examples
– SO2 – Sulfur dioxide
– P2O5 Diphosphorus pentoxide
– PCl3 – Phosphorus trichloride
Stations Directions
• One half of the class will complete the Covalent
Bonding Webquest.
– Visit the link on the worksheet to answer the questions
– No more than 3 people should be at one computer
– The only website you are allowed to be on is the webquest
• The other half of the class will begin with me and
practice writing covalent formulas and naming covalent
compounds
– we will complete some practice worksheets and review
them together
– You will complete one station today and one station
tomorrow
Exit Ticket – Day 1
• Draw a picture representing the difference
between a polar covalent bond and a
nonpolar covalent bond
Day 2 Sequence
Stations - Part 2
• Today you will complete the station that you
did not complete yesterday
• Remember the rules…?
Stations Directions
• One half of the class will complete the Covalent
Bonding Webquest.
– Visit the link on the worksheet to answer the questions
– No more than 3 people should be at one computer
– The only website you are allowed to be on is the webquest
• The other half of the class will begin with me and
practice writing covalent formulas and naming covalent
compounds
– we will complete some practice worksheets and review
them together
– You will complete one station today and one station
tomorrow
When you finish at your station:
Complete the Ionic Compound vs.
Covalent Compound Venn Diagram
This will be collected and graded by
Ms. Ose
Exit Ticket – Day 2
• Determine if the compound is ionic or
covalent. Then name the compound.
– CO
– Al2O3
– PCl5
– BeO