1) ________ is a unique element and does not truly belong to any family.
A) Nitrogen
B) Radium
C) Hydrogen
D) Uranium
E) Helium
2) The ________ ion has a noble gas electron configuration.
A) Be2+
B) Li2+
C) Li
D) Mg2-
E) Al2+
3) Which one of the choices below is not considered a fossil fuel?
A) anthracite coal
B) crude oil
C) natural gas
D) hydrogen
E) petroleum
4) (the first ionization energy ________.
A) decreases, decreasingly, increases
B) increases, increasingly, decreases
C) increases, increasingly, increases
D) decreases, increasingly, increases
E) decreases, increasingly, decreases
5) The central atom in the O3 molecule has ________ nonbonded electron pair(s) and
________ bonded electron pair(s) in its valence shell.
A) 6, 2
B) 1, 3
C) 2, 2
D) 3, 1
E) 3, 2
6) Barium forms an ion with a charge of ________.
A) 1+
B) 2-
C) 3+
D) 3-
E) 2+
7) The electron-domain geometry of a sulfur-centered compound is trigonal
bipyramidal. The hybridization of the central sulfur atom is ________.
A) sp
B) sp2
C) sp3
D) sp3d
E) sp3d2
8) The entropy change accompanying any process is given by the equation:
A) S = k lnWfinal
B) S = k Wfinal – k Winitial
C) S = k ln(Wfinal / Winitial)
D) S = k final – k initial
E) S = Wfinal – Winitial
9) The average fuel value of sugars is 17 kJ/g. A 2.0 L pitcher of sweetened Kool-Aid®
contains 400 g of sugar. What is the fuel value (in kJ) of a 500 mL serving of
Kool-Aid®? (Assume that the sugar is the only fuel source.)
A) 4.2 x 104 kJ
B) 1.7 x 103 kJ
C) 1.7 x 106 kJ
D) 1.7 x 102 kJ
E) 17 kJ
10) A compound that is composed of only carbon and hydrogen contains 80.0% C and
20.0% H by mass. What is the empirical formula of the compound?
A) C20H60
B) C7H20
C) CH3
D) C2H6
E) CH4
11) The root-mean-square speed of NO2 at 28.4 °C is ________ m/sec.
A) 404
B) 40.2
C) 124
D) 233
E) 12.8
12) The strongest interparticle attractions exist between particles of a ________, and the
weakest interparticle attractions exist between particles of a ________.
A) solid, liquid
B) solid, gas
C) liquid, gas
D) liquid, solid
E) gas, solid
13) The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00
mg/kg of body mass. Calculate the dose in milligrams for a 134-lb person.
A) 20
B) 1,773
C) 1.8
D) 365
E) 3.6 X 105
14) Of the following, ________ is the smallest mass.
A) 55 kg
B) 55 mg
C) 55 pg
D) 55 fg
E) 55 ng
ΔH for an endothermic process is ________ while H for an exothermic process is
________.
15) A) zero, positive
B) zero, negative
C) positive, zero
D) negative, positive
E) positive, negative
16) Which one of the following compounds is insoluble in water?
A) Na2CO3
B) K2SO4
C) Fe(NO3)3
D) ZnS
E) AgNO3
17) Which isotope has 36 electrons in an atom?
A) Kr
B) Br
C) Se
D) Cl
E) Hg
18) An element cannot ________.
A) be part of a heterogeneous mixture
B) be part of a homogeneous mixture
C) be separated into other substances by chemical means
D) interact with other elements to form compounds
E) be a pure substance