AP Chemistry: Class 29

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Period E – Monday, October 28th

Last Exam

• If you wish another chance at the last exam then must take retake
• retake = Wednesday October 30th after school (2:45 pm)
• NO OTHER TIMES POSSIBLE

Homework Review

• Ch. 6 (18, 24, 37, 38)
• Questions?

Recap Mapping Activity

• orbital = area of probability
• drawing of orbital  = mental construct (don’t “look” like that)
• analogy: each student orbital unique, defined by factors for each

New Material – How do I define the parameters of an orbital?

• Quantum numbers – meaning of each
• 3QN = electron “Address”
• Examples of quantum number rules
• Q: write all of the QN combinations for n=1, n=2, n=3
• COOL [LINK] = visualizations of orbitals and QN
• COOL iPad APP = Atom in a Box [LINK]

Homework

• Ch. 6 (51 – 56)

LAB ANSWER

You cannot determine the identity of the carbonate because the calcium chloride is the limiting reactant in the reaction. Gravimetric analysis only works when the precipitate is tied to the desired limiting reactant.