Pretest

Question 1

Which best describes the energy change that takes place during deposition?

Revolt · Accepted Answer

C: Heat energy is released by the substance.

Question 2

A gaseous substance turns directly into a solid. Which term describes this change?

Revolt · Accepted Answer

C: deposition

Question 3

When does carbon dioxide absorb the most heat energy?

Revolt · Accepted Answer

D: during sublimation

Question 4

Which example involves a phase change in which heat energy is released by the substance?

Revolt · Accepted Answer

C: freezing ice cream

Question 5

cap h sub 2 cap o is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?

Revolt · Accepted Answer

A: from a gas to a liquid

Question 6

In which phase transition do molecules move directly from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?

Revolt · Accepted Answer

A: sublimation

Question 7

Consider the statement. “When nitrogen is liquefied, heat is released.” Is this statement true or false?

Revolt · Accepted Answer

C: It is true because heat is released when a gas changes to a liquid.

Question 8

Which energy change occurs during boiling?

Revolt · Accepted Answer

A: Heat energy is absorbed by the substance.

Question 9

A solid substance turns directly into a gas. Which term describes this change?

Revolt · Accepted Answer

C: sublimation

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