Pretest

Question 1

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?

Revolt · Accepted Answer

B: applying heat to the liquid

Question 2

Which type of substance is water able to dissolve?

Revolt · Accepted Answer

B: ionic and polar

Question 3

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

Revolt · Accepted Answer

B: surface tension

Question 4

Why are liquids well suited for hydraulics?

Revolt · Accepted Answer

A: Liquids are incompressible.

Question 5

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

Revolt · Accepted Answer

C: They have enough kinetic energy to easily slide by each other.

Question 6

Which term best describes the substances that cause oil and water molecules in salad dressing to interact and mix?

Revolt · Accepted Answer

B: surfactants

Question 7

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

Revolt · Accepted Answer

C: leave little space between the molecules.

Question 8

Melting can be best described as a process in which molecules

Revolt · Accepted Answer

D: gain enough kinetic energy to get past each other.

Question 9

What happens when a solid is dissolved into a liquid?

Revolt · Accepted Answer

C: Solid particles become evenly dispersed among liquid particles.

Question 10

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

Revolt · Accepted Answer

B: boiling

Pretest Answers

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