Liquids Answers

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What is produced on the top of a pool of water by the mutual attraction between water molecules?

A
surfactant
B
surface tension
C
a much smaller volume
D
a much higher density
2
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Why are liquids well suited for hydraulics?

A
Liquids have low densities.
B
Liquids are incompressible.
C
Liquids change volume easily.
D
Liquids have few molecules.
3

Which process most likely takes place when the kinetic energy of molecules overcomes the intermolecular forces?

A
boiling
B
condensation
C
freezing
D
solidification
4

Valerie wants to examine the properties of a thick liquid but is finding it difficult to pour the liquid into a beaker. She needs to finish her investigation before the end of class. Which method will allow her to pour the liquid easily?

A
boiling the liquid vigorously
B
applying heat to the liquid
C
placing the liquid in the refrigerator
D
mixing the liquid with another solution
5

What happens when a solid is dissolved into a liquid?

A
Solid particles float toward the surface layer of liquid particles.
B
Solid particles sink down toward the bottom layer of liquid particles.
C
Solid particles become evenly dispersed among liquid particles.
D
Solid particles become suspended in the middle of liquid particles.
6

Which postulate of the kinetic-molecular theory applies to the particles of a liquid?

A
They do not move freely but vibrate in a stationary position.
B
They can be compressed, which causes a large change in volume.
C
They have so much kinetic energy that their intermolecular forces are negligible.
D
They have enough kinetic energy to easily slide by each other.
7

Glycerol boils at a higher temperature than water. What does this indicate about the attractive forces of glycerol?

A
They are nonexistent.
B
They are the same as those in water.
C
They are stronger than those in water.
D
They are weaker than those in water.
8

The particles in water have less mobility than the particles in oxygen. Which statement best explains this observation?

A
Water is always colder than oxygen.
B
Water has a lower density than oxygen.
C
Water particles have a greater kinetic energy.
D
Water particles have strong intermolecular forces.
9

Which term best describes liquid behavior under pressure?

A
incompressible
B
compressed
C
immiscible
D
surfactant
10

Liquids and solids are referred to as “condensed phases” because the attractive forces

A
cause molecules to become stationary.
B
leave little space between the molecules.
C
create large spaces between the molecules.
D
that hold the molecules together are negligible.

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