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Learning Intentions
You can determine if a substance is ionic or covalently bonded using electronegativity.
You can draw Lewis Structures for both ionic and covalent bonded substances
Content Standards being covered:
*Student understands why bonding (intramolecular forces)
occurs between atoms, what types of bonds form when different elements interact,
how the bonds form and properties that arise as a result of the bond forming.
93. Electronegativity is the amount of attraction that an atom has to pull an
electron to itself, removing it from another atom and forming an anion (measured
in Pauling Units)
121. Ionic compounds have large differences between the electronegativities of
atoms >1.7
122. Covalent compounds (molecular compounds) have smaller (polar) <1.7 or no
differences (non polar) between electronegativities of atoms
137. A polar molecule is a molecule where the atoms do not share the electrons
equally (they have a difference in electronegativity between 0.4 and 1.7) or the
molecule is unsymetrical and so create a slightly polar compound wherein one
element becomes slightly positive and the other slightly negative
138. Nonpolar molecules are formed when there is no difference in
electronegativity, < 0.4 or the overall compound is symmetrical
Habits of Mind/Life skills being covered:
Thinking and Communicating with Clarity
Making Connections with Past Knowledge
Journal Entry:
What is the purpose of RTI assignments?