1) the term limelight is derived from the old name for calcium oxide. what is the
formula of calcium oxide?
a.cao2
b.ca2o
c.cao
d.ca2o2
2) what is the correct common name for the compound with the formula cucl2?
a.copper chloride
b.copper chlorine
c.cupric chloride
d.cuprous chloride
3) in comparing sodium and potassium which of the following statements is true?
a.sodium is more likely to lose an electron than potassium because sodium has a higher
ionization energy than potassium.
b.sodium is more likely to lose an electron than potassium because sodium has a lower
ionization energy than potassium.
c.sodium is less likely to lose an electron than potassium because sodium has a higher
ionization energy than potassium.
d.sodium is likely to lose an electron than potassium because sodium has a lower
ionization energy than potassium.
4) which of the following is true about a molecule which contains three polar bonds
which have the same degree of polarity?
a.the molecule will always be polar.
b.the molecule will never be polar.
c.the molecule will be polar if the electron distribution is trigonal planar.
d.none of the above is true.
5) which of the following molecules is(are) polar?
a.ch3cl
b.ch2cl2
c.both of them
d.neither of them
6) in the region of the periodic table associated with the inner transition elements which
type of orbitals are being filled?
a.s
b.p
c.d
d.f
7) what electronegativity difference is associated with a nonpolar covalent bond?
a.exactly 0
b.less than 0.5
c.between 0.5 and 1.9
d.greater than 1.9
8) which of the following accounts for the flow of oxygen into the alveoli?
a.hemoglobin transports the o2 into the alveoli.
b.myoglobin transports the o2 into the alveoli.
c.the o2 pressure in the alveoli is higher than that in the inhaled air.
d.the o2 pressure in the alveoli is lower than that in the inhaled air.
9) a covalent bond is associated with which of the following?
a.interactions between nuclei
b.the sharing of electrons
c.the transfer of electrons
d.all of these
10) cobalt-60 is a radioactive isotope sometimes used in the treatment of cancer. which
of the following statements is true about an atom of cobalt-60?
a.it contains 60 neutrons.
b.it contains 60 protons.
c.it contains 33 neutrons.
d.it contains 33 protons.