Lewis Dot Diagrams Thursday, November 16, 2017

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Presentation transcript:

Lewis Dot Diagrams Thursday, November 16, 2017 Objective: I will create accurate structural formulas using Lewis dot symbols, describe the type of bonding found in molecular substances, and explain the chemistry behind the HONC1234 rule. Entry Task - Chem Catalyst 31

Lewis Dot Symbols How are Lewis Dot Symbols related to valence electrons? How can you use Lewis Dot Symbols to determine the number of bonds an atom will make? According to what you know so far, what is a covalent bond? How does it compare to an ionic bond?

Definitions Lewis Dot Symbol - A diagram that uses dots to show the valence electrons of a single atom. Lewis Dot Structure - A diagram that uses dots to show the valence/bonding electrons of a molecule Isomers - Molecules with the same molecular formula but different structural formulas

Questions How do puzzle pieces keep track of how many bonds each atom makes? How many possible isomers does molecular formula C3H8O have? Explain how you figured this out.

Exit Task The molecular formula C4H10O has 7 different isomers. Draw the structural formula for one of them As, arsenic