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Practice Test - Changes of State



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Which of the following describes what happens as the temperature of a gas in a balloon increases?
a.
The speed of the particles decreases.
b.
The volume of the gas increases and the speed of the particles increases.
c.
The volume decreases.
d.
The pressure decreases.
 

 2. 

Dew collects on a spider web in the early morning. This is an example of
a.
condensation.
c.
sublimation.
b.
evaporation.
d.
melting.
 

 3. 

The atoms and molecules in matter
a.
are attracted to one another.
c.
move faster at higher temperatures.
b.
are constantly moving.
d.
All of the above
 

 4. 

Which of these factors could affect the temperature at which water boils?
a.
the volume of water in the pot
b.
the atmospheric pressure at which the water is heated
c.
the amount of energy added to the water
d.
the type of fuel used to heat the water
 

 5. 

The particles of water that evaporate from an open container have ____ than the particles that remain.
a.
more speed
c.
higher energy
b.
greater order
d.
more speed and higher energy
 

 6. 

Hydraulic systems, such as the brakes on an automobile, work because liquids tend to maintain a constant
a.
volume.
c.
temperature.
b.
pressure.
d.
boiling point.
 

 7. 

Which of the following occurs when a liquid becomes a gas?
a.
The particles give off energy.
b.
The particles break away from one another.
c.
The particles move closer together.
d.
The particles slow down.
 

 8. 

In a gaseous state, particles
a.
move independently of one another.
b.
move fast enough to break away completely from one another.
c.
have empty space between them.
d.
All of the above
 

 9. 

The amount of force exerted on a given area is called
a.
pressure.
c.
energy.
b.
viscosity.
d.
temperature.
 

 10. 

If a pressure cooker contains steam at high pressure, then the particles of gas are
a.
far apart and collide with the inside of the container at a slow rate.
b.
close together and collide with the inside of the container at a slow rate.
c.
close together and collide with the inside of the container at a fast rate.
d.
far apart and collide with the inside of the container at a fast rate.
 

 11. 

You can cause water to change state by removing or adding
a.
matter.
c.
energy.
b.
particles.
d.
surface tension.
 

 12. 

The temperature at which a substance changes from a solid to a liquid is its
a.
boiling point.
c.
melting point.
b.
sublimation point.
d.
evaporation point.
 

 13. 

When a solid is at its melting point, any energy it absorbs
a.
increases the motion of the particles until they overcome the attractions that hold them in place.
b.
decreases the motion of the particles until they overcome the attractions that hold them in place.
c.
causes the temperature to increase.
d.
causes the temperature to decrease.
 

 14. 

The temperature at which a liquid changes into a solid is its
a.
boiling point.
c.
sublimation point.
b.
freezing point.
d.
evaporation point.
 

 15. 

Freezing and ____ occur at the same temperature.
a.
melting
c.
condensation
b.
vaporization
d.
sublimation
 

 16. 

Water is a liquid and iron is a solid at room temperature, so iron must have a ____ than water.
a.
lower freezing point
c.
lower boiling point
b.
higher freezing point
d.
Both (a) and (c)
 

 17. 

Boiling is ____ that occurs throughout a liquid.
a.
melting
c.
vaporization
b.
condensation
d.
sublimation
 

 18. 

Which of the following statements describes evaporation?
a.
Evaporation is a form of vaporization.
b.
Evaporation occurs in a liquid below its boiling point.
c.
Evaporation occurs at the surface of a liquid.
d.
all of the above
 



 
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