AP Chemistry Exam Prep

Question 1

(Metric Prefixes) mega-

Answer 1

Prefix: M
Value: 10^6

Question 2

(Metric Prefixes) kilo-

Answer 2

Prefix: k
Value: 10^3

Question 3

(Metric Prefixes) deci-

Answer 3

Prefix: d
Value: 10^-1

Question 4

(Metric Prefixes) centi-

Answer 4

Prefix: c
Value: 10^-2

Question 5

(Metric Prefixes) milli-

Answer 5

Prefix: m
Value: 10^-3

Question 6

(Metric Prefixes) micro-

Answer 6

Prefix: μ
Value: 10^-6

Question 7

(Metric Prefixes) nano-

Answer 7

Prefix: n
Value: 10^-9

Question 8

(Metric Prefixes) pico-

Answer 8

Prefix: p
Value: 10^-12

Question 9

(Equalities) _cm^3 = _mL

Answer 9

1, 1

Question 10

(Equalities) _L = ____mL = ____cm^3

Answer 10

1, 1000, 1000

Question 11

(Equalities) _cm^3 H2O = _g H2O

Answer 11

1, 1

Question 12

(Stoichiometry) Equation for Percent Composition

Answer 12

%x = [(amu of x)(no. of x in formula)/(mm of compound)]*100

“x” is any element.
“mm” is molar mass.
“amu” is atomic mass.

Ex. %Na of NaCl:
%Na = [(22.99g)(1Na)/(58.44g/mol)]*100]
%Na = 39.34%

Question 13

(Misc.) Solubility Product Constant

Answer 13

Ksp = [A]^a[B]^b

“a” and “b” are stoichiometric coefficients.

There is no denominator because in this equilibrium expression (Ksp) because the reactant is a single SOLID.

Ex. Equilibrium Expression for MgCl2:
Ksp = [Mg2+][Cl-]^2