WARM UP List the 3 different types of chemical bonds, and describe two characteristics of each.

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Presentation transcript:

WARM UP List the 3 different types of chemical bonds, and describe two characteristics of each.

Bonding Basics Chemistry II

Lewis Dot Diagrams Show valence e- 8 e- is octet Stable Full valence shell

Ionic Bonds Magnetic ions of opposing charges attract Gained or lost e- – (anion) or + (cation) charge Create octet

Covalent Bonds Sharing unpaired e- Create octet Both atoms get shared e-

Metallic Bonding Electrons “delocalized” Can move between atoms Electrical conductivity

Identifying Bond Type Type of Elements Ionic: metal and non-metal Covalent: 2 non-metals Metallic: metals only

Identifying Bond Type Electronegativity (electron affinity) difference of atoms (p. 370) Pulling electrons……….sharing unequally Greater pull = negative charge

Identifying Bond Type Ionic: 2.0 or more (full + and – charges) Polar Covalent: 0.5 to 1.9 (slight + and –) Pure Covalent: less than 0.5 (no charges)

WRAP UP Compare and contrast ionic and covalent bonds.

WARM UP Draw a Lewis dot diagram for: Ca C Cl Determine the bond type for: NaCl PbO BF CH

WRAP UP Compare and contrast polar and nonpolar covalent bonds.