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Bell: 10/13. Draw the Lewis Structure and name the molecule: C 2 H 4 Objective: Compare covalent, ionic, and metallic bonds with respect to electron behavior. Announcements. Wednesday: Quiz: Ionic, Covalent, and metallic bonding and naming Covalent Bonding WS – Due
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Bell: 10/13 • Draw the Lewis Structure and name the molecule: • C2H4 • Objective: • Compare covalent, ionic, and metallic bonds with respect to electron behavior
Announcements • Wednesday: • Quiz: Ionic, Covalent, and metallic bonding and naming • Covalent Bonding WS – Due • Lewis Structure Practice - Due
Types of Bonding • Ionic Bonding: • Covalent Bonding:
Differences in Electronegativity • Nonpolar Covalent: • Polar Covalent: • Ionic:
Example: • Is H2O polar covalent or nonpolar covalent?
Example: • Is O2 polar covalent or nonpolar covalent?
Metallic Bonding • Valence electrons can roam freely (delocalized)
Properties of metals • Shiny (luster): • Conductive:
Properties of Metals • Malleable: • Ductile:
Alloys • Contains more than 1 element
Diatomic Molecules • 7 Diatomic molecules:
Bonding Review Ionic Covalent • Formula Units • e- are transferred • Crisscross method • Molecular Formulas • e- are shared • Lewis structures
Naming Review Ionic Covalent • Metal comes first • Say the metals name • Change ending of nonmetal to -ide • Prefixes tell us how many • Don’t use mono- on first element • Change ending of last element to -ide
Examples: Ca + P => SiH3
Bonding Review Bond Length Bond Strength • Single Bond • Double Bond • Triple Bond • Single Bond • Double Bond • Triple Bond
Example: • Which is the shortest bond in the molecule Cl2CO? • Which is the easiest to break?
Homework • Bonding Review: Due Wednesday