Do Now Update your table of contents: Glue your HW into page 105, glue the metallic bonding notes into 103, and the bonding foldable into 104. Discuss with your table to predict properties of metallic bonding. Page # Title Date 102-103 Metallic Bonding 1/25/15 104 Bonding Foldable 105 Covalent bonding practice

Home Work Review

Home Work Review

Home Work Review

Metallic Bonding Metallic bonds are chemical bonds where many metal atoms share their pooled valence electrons, creating a “sea of electrons.” This occurs only in metals and it is the weakest of the 3 types of chemical bonds. Metal atoms bond together by pooling their valence electrons. These electrons are able to move freely between metal ions.

Metallic bonding

Metallic Properties Because valence electrons can move from ion to ion, metals are good conductors of electricity. A metal’s malleability and ductility is due to the metal ions being able to slide past each other to new positions. Metals have luster because the valence electrons are free and can easily jump between energy levels.

Exit ticket Create a Lewis dot diagram that shows the transfer of electrons for the following. Write the chemical formulas for each. Magnesium + Sulfur Sodium + Nitrogen Create a Lewis Dot diagram for the following that shows the sharing of electrons. Write it with lines to represent bonds as well. NH3 CO2

On page 12 Create an analogy to show the differences for all three types of bonding: Ionic, covalent, and metallic It can be in a form of a story or a drawing Make it creative! USE THE WHOLE PAGE