WARM UP Write Lewis dot diagrams for:

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Presentation transcript:

WARM UP Write Lewis dot diagrams for: Carbon(C) Calcium(Ca) Arsenic(As) How many electrons would the following atoms want to gain, lose, and/or share?

Types of Chemical Bonds Advanced Chemistry I

Ionic Bonds Made of ions + and – ions stick together Atom creates octet by gaining or losing e- Gain = - charge = anion Lost = + charge = cation + and – ions stick together Overall charge = 0

Ionic Crystals Salts + and - network

Covalent Bonds Sharing unpaired valence e- Count for both atoms Create octet

Covalent Crystals Molecules Network of bonds Connected compounds Diamonds (3D) Graphite (2D) Connected compounds

Metallic Bonds “Sea of e-” around atoms

Metallic Crystals Delocalized electrons move through crystal Conductors Malleable Ductile

Identifying Bond Type Element type Ionic: metal and non-metal Covalent: non-metals Metallic: metals

Identifying Bond Type Electronegativity difference (pg. 370) Ionic: 2.0 or more Covalent: less than 2.0

WRAP UP Determine the bond type for each of the following combinations… CO2 NH3 KCl Cu/Sn alloy AlBr3