1. Which of the following contains particles with the least
freedom of motion?
A) CO 2( )
C) F2(g)
E) C6H12O6(aq)
6. In this temperature–time graph for the heating of H2O at
a constant rate, the segment DE represents the
B) HCl(aq)
D) MgBr2(s)
2. During boiling, the temperature of a pure liquid
substance
A)
B)
C)
D)
E)
increases
decreases
increases then decreases
decreases then increases
remains the same
3. The state of matter which exhibits definite volume but
not a definite shape is
A) liquid
C) solid
E) aqueous
B) gas
D) vapor
4. The vapor pressure of water at 50.0 ° C is 92.5 mmHg.
What is the temperature of a sample of boiling water
when its vapor pressure is 380. mmHg?
A)
B)
C)
D)
E)
Between 0.00° C and 50.0° C
50.0 ° C
Between 50.0° C and 100. ° C
100. ° C
Over 100.° C
5. What is the approximate boiling temperature of water
when the pressure is 5300 mmHg?
A) 1,500 ° C
C) 550 ° C
E) 100 ° C
B) 950 ° C
D) 150 ° C
A)
B)
C)
D)
E)
gas being warmed
liquid being warmed
liquid changing to gas
solid changing to liquid
gas being warmed
7. The vapor pressure of water, H 2O, at 292 K is 2.200 kPa.
Some oxygen, O 2 is collected over water at 292 K and
the total pressure of the gas is 101.1 kPa. The pressure of
the oxygen is
A) 98.9 kPa
C) 101.1 kPa
E) 760.0 kPa
B) 99.9 kPa
D) 103.3 kPa
8. Which statement about evaporation is true?
A) The liquid is much more compressible than the
vapor
B) The density of the liquid is less than that of the
vapor
C) The molecules become separated and exhibit
relatively great distances during evaporation
D) The molecules of the vapor have a different
chemical composition than those of the liquid
E) The molecules lose energy during the evaporation
process
9. The pressure due to the molecules of a substance in the
vapor above its corresponding liquid is called the
A) air pressure
C) oxygen pressure
E) partial pressure
B) vapor pressure
D) saturation pressure
10. The vapor pressure of a liquid depends upon
A)
B)
C)
D)
E)
the amount of liquid present
the surface area of the liquid
the temperature of the liquid
the external pressure on the liquid
the mass of the liquid
11. The vapor pressure of a liquid depends on its
A)
B)
C)
D)
E)
volume
temperature
exposed surface area
atmospheric pressure
density
12. A volume of 125 mL of xenon is collected over water at
a temperature of 21° C and a pressure of 817 mmHg.
What is the pressure of the pure, dry xenon, in mmHg?
(Vapor pressure of H 2O = 18.7 mmHg at 21ºC)
A) 18.7 mmHg
C) 798 mmHg
E) 834 mmHg
B) 761 mmHg
D) 817 mmHg
13. Which equation represents sublimation?
A) I 2(s) ® I 2(g)
C) CO 2(l) ® CO 2(g)
E) O2(g) ® O2(s)
B) NH 3(g) ® NH 3(l)
D) H2O(s) ® H2O(l)
14. If wet clothes are put outside on a clear day at a
temperature of –10° C, the clothes will
A)
B)
C)
D)
E)
freeze and therefore not dry
dry because the sun will heat them to near 100 ° C
dry by evaporation of water only
dry by condensation and evaporation of the water
dry by sublimation of frozen water
15.
The phase diagram for a pure substance is shown above. What is the normal melting point temperature for
this substance?
A) 5.5 oC
B) –15.0 oC
C) 80.0 oC
D) 290.0 oC
E) 0 oC
16. Base your answer to the following question on this phase diagram.
The critical temperature of this substance is 290 oC. What is meant by the term "critical temperature"?
A)
B)
C)
D)
E)
It is the temperature at which the substance can no longer exist.
It is the temperature above which a substance can no longer be evaporated.
It is the temperature above which a substance can no longer be liquified.
It is the temperature above which a substance can no longer be solidified.
It is the temperature at which all electrons enter the excited state.
17. In the phase diagram of water, graphing pressure versus 21. Base your answer to the following question on the table
temperature, why does the equilibrium between the
below.
solid and liquid phases curve to the left?
A) The solid phase is more dense than the liquid
phase.
B) An increase in pressure causes the liquid to
vaporize.
C) The liquid phase is more dense than the solid
phase.
D) The liquid phase has a higher vapor pressure than
the solid phase.
E) At higher temperatures, the liquid is more likely to
vaporize.
18. In which process will energy be evolved as heat?
A) melting
C) vaporization
E) none of the above
B) sublimation
D) crystallization
19. Which substance is a network of atoms bonded by
covalent bonds in a brittle crystalline arrangement
Which of the substances in the table are examples of
network solids?
A) C and SiO 2
C) NaCl and KOH
E) SiO2 and H2O
B) H2O and HF
D) He, CCl 4 and CH 4
22. Which of the following is not considered standard
temperature?
A)
B)
C)
D)
E)
A) I
C) III
E) None of the above
B) II
D) IV
23. 380. mmHg is equivalent to 380.
A) K
B) ° C
C) mL
D) Torr E) atm
24. An example of a chemical change is
20. Which compound is a network covalent solid?
A) S8(s)
C) NaCl(s)
E) CO 2(s)
0 °C
273 K
32 ° F
25 N
All of the above are standard temperature
B) SiO2(s)
D) C25H52(s)
A) grinding rock.
C) heating water.
E) melting ice.
B) baking a cake.
D) breaking glass.
25. Which is the most important factor that shows a
substance must be a mixture rather than a compound?
When it
A)
B)
C)
D)
E)
looks like salt
is a uniform white powder
is completely soluble in water
melts in the range of 245 ° to 300 ° C
always reacts violently with water
26. What would the correct equation for determining
percent error be in a theoretical experiment where the
experimental value is determined as 36 J and the
accepted value is 38.5 J?
A)
27.
B)
C)
D)
Where is the hottest part of a bunsen burner flame?
A)
B)
C)
D)
E)
A
B
C
D
All are at about the same temperature.
28. I. Water boils at a higher temperature at low altitudes
than at high altitudes
BECAUSE
II. the atmospheric pressure decreases as the altitude
increases.
A)
B)
C)
D)
I is TRUE, II is FALSE
I is FALSE, II is TRUE
I and II are BOTH FALSE
I and II are BOTH TRUE but II IS NOT a correct
explanation of I
E) I and II are BOTH TRUE and II IS a correct
explanation of I
Answer Key
Practice Questions solids and liquids
1.
D
2.
E
3.
A
4.
C
5.
D
6.
C
7.
A
8.
C
9.
B
10.
C
11.
B
12.
C
13.
A
14.
E
15.
A
16.
C
17.
C
18.
D
19.
C
20.
B
21.
A
22.
D
23.
D
24.
B
25.
D
26.
A
27.
B
28.
E