1) which of the following elements is named for a country?
a.fr
b.ge
c.po
d.all of them
2) which of the following types of orbitals come in sets of seven?
a.s
b.p
c.d
d.f
3) how many electrons can be accommodated in the fourth shell of an atom?
a.2
b.8
c.18
d.32
4) in a lewis structure, which of the following atoms can have more than eight electrons
associated with it?
a.c
b.o
c.s
d.none of these
5) which of the following has the highest ionization energy?
a.cl
b.f
c.n
d.o
6) which of the following contains two species which are a pair of isotopes?
a.14c, 14n
b.12c, 13c
c.both a and b
d.neither a nor b
7) what is the formula of the compound formed by potassium and chlorine?
a.kcl
b.kcl2
c.kcl3
d.k2cl
8) in which of the following molecules does the carbon atom have a nearly trigonal
planar distribution of electron density?
a.c2h2
b.c2h4
c.c2h6
d.none of these
9) which of the following techniques would be most effective in separating the
components of salt water?
a.pouring the liquid off the solid
b.evaporation
c.filtration
d.none of these
10) zinc can be uniformly mixed in differing amounts in copper to an alloy called brass.
brass is an examples of which of the following?
a.compounds
b.elements
c.homogeneous mixtures
d.heterogeneous mixtures
11) which of the following correctly describe ionization energies?
a.ionization energies are always positive, the process is always endothermic.
b.ionization energies generally increases as we go from top to bottom within a column
of the periodic table.
c.both a and b
d.neither a nor b
12) consider the periodic table given below.
which number represents an element that not classified as main-group?
a.1
b.2
c.3
d.4
e.5
f.6
g.7
h.all are main-group elements.
13) what is the correct name for kh2po4?
a.potassium hydride phosphate
b.potassium hydrogen phosphoxide
c.potassium hydrogen phosphate
d.potassium dihydrogen phosphate
14) the concentration of which of the following is reduced to prevent blood clotting
during a transfusion?
a.ca2+c.k+
b.fe2+d.na+
15) normal kidney function involves which of the following?
a.filtration in which small molecules are lost but large molecules are retained
b.reabsorption of some small molecules from the urine
c.both a and b
d.neither a nor b
16) the mass number of an atom is equal to which of the following?
a.the number of protons in the atom
b.the number of neutrons in the atom
c.the total number of protons and neutrons in the atom
d.the total number of protons, neutrons and electrons in the atom
17) how many electrons can be accommodated in the 3d subshell?
a.3
b.6
c.10
d.18
18) which of the following is synthesized by lymphocytes?
a.cholesterolc.immunoglobulins
b.hemoglobind.insulin
19) which of the following have been associated with prolonged treatment with drugs
such as premarin or provera?
a.an increased risk of breast cancerc.both a and b
b.an increased risk of heart problemsd.neither a nor b