Name ____________________
Attractions | Nonpolar Molecules
1. Which electron dot formula does not represent a
dipole molecule?
1)
2)
3)
4)
2. Which statement explains why low temperature and high
pressure are required to liquefy chlorine gas?
1) Chlorine molecules have weak covalent bonds.
2) Chlorine molecules have strong covalent bonds.
3) Chlorine molecules have weak intermolecular
forces of attraction.
4) Chlorine molecules have strong intermolecular
forces of attraction.
3. At STP, fluorine is a gas and iodine is a solid. This
observation can be explained by the fact that fluorine has
1) weaker intermolecular forces of attraction than
iodine
2) stronger intermolecular forces of attraction than
iodine
3) lower average kinetic energy than iodine
4) higher average kinetic energy than iodine
4. Which sequence of Group 18 elements demonstrates a
gradual decrease in the strength of the forces of
attraction between them?
1)
2)
3)
4)
Ar(
Kr(
Ne(
Xe(
), Kr(
), Xe(
), Ar(
), Kr(
), Ne( ), Xe( )
), Ar( ), Ne( )
), Kr( ), Xe( )
), Ar( ), Ne( )
5. As the distance between two bromine molecules
increases, the magnitude of the atractive forces between
them
1) decreases
3) remains the same
2) increases
6. Intermolecular attractions strength affect a substances 1)
2)
3)
4)
nuclear charge
melting point temperature
spectral lines
chemical properties
7. Molecular forces of attraction between molecules always
decrease with
1) increasing molecular size and increasing distance
between the molecules
2) increasing molecular size and decreasing distance
between the molecules
3) decreasing molecular size and increasing
distance between the molecules
4) decreasing molecular size and decreasing distance
between the molecules
8. As the noble gases are considered in order of increasing
atomic number, the moleular attractions between
the particles in a given sample of each of these gases
1) decrease
3) remain the same
2) increase
9. The strongest attractions exist between molecules of...?
(Hint: The mass of these elements is presented on the
Periodic Table)
1) I 2
2) Br 2
3) Cl 2
4) F2
10. Which characteristic of the compound C 5H12 causes it
to have a higher normal boiling point than C 2H6?
1) The distance between molecules of C 5H12 is
greater.
2) The force of attraction between molecules of C 5
H 12 is greater.
3) C5H12 has a larger number of ionic bonds.
4) C5H12 has a larger number of double bonds.
11. Which of the following compounds in the liquid phase
has the highest normal boiling point?
1) C5H 12 2) C4H10 3) C3H8 4) C2H6
Answer Key
Attractions | Nonpolar Molecules
1.
3
2.
3
3.
1
4.
4
5.
1
6.
2
7.
3
8.
2
9.
1
10.
2
11.
1