AP Chemistry Exam Review Project Contributors Big Idea
+ AP Chemistry Exam Review
+ Project Contributors Big Idea 1 Big Idea 2 Big Idea 3 Kristie Chiscano, MD Thomas Comey, MA Tom Michocki, MEd Orla Thomas, MEd Brandie Freeman*, Ed. S Suzanne Adams, MEd Louis Casagrande, Ph. D Ronald Brandt, Ph. D Anne Marie Norman, MAT Ali Mc. Dillon, MEd Michelle Winesett, MEd Christina Cummings MEd Tricia Miller, MS Big Idea 4 Big Idea 5 Big Idea 6 Kaleb Underwood, BA Christine Taylor, MEd Kate Smola, MEd Brian Stagg, MCLFS Liz Gosky, MEd Jill Barker*, Ed. D Bonnie Buchak, MS Pam Kimber, MEd Chris Sterman, MEd Sohum Bhatt, BSE Ouida Dunton, Ed. S Glenn Arnold, MEd Dave Foy, MEd Cheryl Vanicek, MEd Labs and Write This… Nora Walsh, MS
+ Project Contributors, Continued Final Editors Paul Cohen*^+, MA Russ Maurer, Ph. D Bridget Adkins*, MEd Russ Kohnken*, Ph. D Matthew Kennedy*, Ph. D Dena Leggett*, Ph. D Project Coordinator Brandie Freeman, Ed. S Questions or Comments? Contact Brandie. Freeman@Bartow. k 12. ga. us *- AP Reader, ^ - Table Leader, + -Question Writer
+ Common Problems and Misconceptions n Going from mass to empirical formula – often switch the coefficients n Transition metals lose the s electrons first n s electrons are further on average from nucleus than p for same energy level n Units: k. J vs J, °C vs K, per mole or per gram; don’t lose track of which unit you’re using; not always at STP for a gas n Explaining is more than just an observation: a lone pair on a central atom is not sufficient for shape, the pair must act (repel the other electrons) n What occurs in the process of dissolving? The solute is not disappearing; it is mixing
+ Common Problems and Misconceptions n Don’t make H+ from the addition of a strong base; don’t make OH- from the addition of a strong acid n Van der Waal’s is not LDF; do not use mass as an explanation for LDF. You may use polarizability, # of electrons, size, and volume. n Limiting reactant problems are confusing – which is limiting, how much of the other is used up, how much of the other remains, etc n Combustion analysis to get empirical formula can be confusing, particularly if not using oxygen as the oxidizer
- Slides: 5