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Learn about the properties of covalent bonds and practice correctly naming covalent compound formulas. Compare and contrast ionic and covalent bonds.
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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. • 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 • 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
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 PolarNonpolar
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
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
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