Cliffs AP Chemistry, 3rd Edition

Format of the AP Chemistry Exam

Section I: Multiple-Choice Questions

90 minutes

75 questions 45% of total grade

Periodic table provided; no calculators allowed; no table of equations or constants provided.

Section II: Free-Response (Essay) Questions

Periodic table, a table of standard reduction potentials, and a table containing various equations
and constants are provided.

90 minutes

6 questions 55% of total grade

Part A:40 minutes; calculator allowed (no qwerty keyboards). Any programmable or graphing
calculator may be used and you will not be required to erase the calculator memories before or
after the examination. Questions require mathematical computations. It is essential that you
show all steps in solving mathematical problems since partial credit is awarded in each prob-
lem for showing how the answer was obtained.

Question 1 (Required): 20%—Always on equilibrium: Ksp, Ka, Kb, Kc, or Kp

Question 2 or 3 (Choose either one): 20%—Only one of these problems will be scored. If you
start both problems, be sure to cross out the one you do not want scored. Both questions require
mathematical computations.

Part B:50 minutes; calculator notallowed. Questions do notrequire mathematical
computations.

Question 4 (Required): 15%—Write the formulas to show the reactants and the products for
any five of eight chemical reactions. Each of the reactions occurs in aqueous solution unless
otherwise indicated. Represent substances in solution as ions if the substance is extensively
ionized. Omit formulas for any ions or molecules that are unchanged by the reaction. In all
cases a reaction occurs. You need not balance the equations.

Question 5 (Required): 15%

Question 6 (Required): 15%

Questions 7 or 8 (Choose either one): 15% — Only one of the problems will be scored. If you
start both problems, be sure to cross out the one you do not want scored.

Format and allotment of time may vary slightly from year to year.

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Format of the AP Chemistry Exam