Quiz 4 Chem 1A_old Name:
1. Which of the following correctly describes the states of matter and intermolecular forces?
A. The change in volume that accompanies the conversion of a liquid to a gas can be very large.
B. The change in volume that accompanies the conversion of a liquid to a solid is small.
C. The forces of attraction between molecules in the liquid and solid state correlate with melting point, boiling point, and the energy of phase changes. a. A only b. B only c. C only d. A and B e. A, B and C
2. Which one of the following molecules will exhibit dipole-dipole intermolecular forces as a pure liquid or solid? a. CS
2 b. C
2
H
2 c. SiCl
4 d. Br
2 e. NH
3
3. Which one of the following molecules has the lowest boiling point? a. CH
4 b. CHCl
3 c.CH
2
Cl
2 d. CH
3
Cl e. CCl
4
4. Arrange the following substances in order of increasing boiling point: CH
3
CH
2
OH, HOCH
2
CH
2
OH,
CH
3
CH
2
Cl , and ClCH
2
CH
2
OH
A. CH
3
CH
2
OH < HOCH
2
CH
2
OH < CH
3
CH
2
Cl < ClCH
2
CH
2
OH
B. CH
3
CH
2
Cl < CH
3
CH
2
OH < ClCH
2
CH
2
OH < HOCH
2
CH
2
OH
C. CH
3
CH
2
OH < CH
3
CH
2
Cl < HOCH
2
CH
2
OH < ClCH
2
CH
2
OH
D. CH
3
CH
2
Cl < ClCH
2
CH
2
OH < CH
3
CH
2
OH < HOCH
2
CH
2
OH
E. CH
3
CH
2
OH < ClCH
2
CH
2
OH < CH
3
CH
2
Cl < HOCH
2
CH
2
OH
5. Why is ice less dense than liquid water?
6. The intermolecular forces present in CH
3
NH
2
include which of the following?
I. dipole-dipole; II. ion-dipole; III. Dispersion; IV. hydrogen bonding
A. I, II, III, and IV B. I and III C. I, III, and IV D. I and II E. II and IV
7. Why would the viscosity of a liquid decrease with an increase in temperature?
8. Why did water on the International Space Station appear to form spheres?