Name ________________
Intermolecular Attractions and Bonding
1. Which process is exothermic?
1)
2)
3)
4)
8. Which statement explains why H 2O has a higher boiling
point than N2?
boiling of water
melting of copper
condensation of ethanol vapor
sublimation of iodine
2. Which phase change is accompanied by the release of
heat?
1) H2O(s) ® H2O(g)
2) H2O(s) ® H2O( )
3) H2O( ) ® H2O(g)
4) H 2O( ) ® H 2O(s)
3) liquid to solid
4) liquid to gas
4. Which change results in a release of energy?
1)
2)
3)
4)
9. Which characteristic of the compound C 5H12 causes it to
have a higher normal boiling point than C2H6?
1) decreases
2) increases
5. Which grouping of the three phases of bromine is listed
in order from left to right for increasing distance
between bromine molecules?
7. The table below shows the normal boiling point of four
compounds.
Which compound has the strongest intermolecular
forces?
1) HF( )
2) CH 3Cl( )
3) remains the same
12. Which sample exhibits the greatest intermolecular
attractions?
1) H 2O (s)
2) H2O (l)
3) C12(g)
4) CaC1 2(aq)
3) remains the same
11. As the distance between two bromine molecules
increases, the magnitude of the existing attractions
between them
1) decreases
2) increases
3) solid, gas, liquid
4) solid, liquid, gas
6. Which substance has vibrating particles in regular, fixed
positions?
1) Ca(s)
2) Hg( )
H2O has greater molar mass than N2.
H2O has less molar mass than N 2.
H 2O has stronger intermolecular forces then N 2.
H2O has weaker intermolecular forces than N 2.
10. As the distance between two bromine molecules
increases, the magnitude of the existing van der Waals
forces between them
the melting of H 2O(s)
the boiling of H2O( )
the evaporation of H2O( )
the condensation of H2O(g)
1) gas, liquid, solid
2) liquid, solid, gas
1)
2)
3)
4)
1) The distance between molecules of C 5H12 is greater.
2) The force of attraction between molecules of C 5H
12 is greater.
3) C5H12 has a larger number of ionic bonds.
4) C5H12 has a larger number of double bonds.
3. Which phase change is exothermic?
1) solid to liquid
2) solid to gas
Date:_________________
3) CH 3F( )
4) HCl( )
Chemistry!
3) H2O (g)
Answer Key
Bonding and Phase
1.
3
2.
4
3.
3
4.
4
5.
4
6.
1
7.
1
8.
3
9.
2
10.
1
11.
1
12.
1
Chemistry!