Phase Changes — Quiz

Question 1

Which energy change occurs during boiling?

Revolt · Accepted Answer

Heat energy is absorbed by the substance.

Question 2

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

Revolt · Accepted Answer

sublimation

Question 3

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

Revolt · Accepted Answer

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

Question 4

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

Revolt · Accepted Answer

deposition

Question 5

When does carbon dioxide absorb the most heat energy?

Revolt · Accepted Answer

during sublimation

Question 6

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

Revolt · Accepted Answer

freezing ice cream

Question 7

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

Revolt · Accepted Answer

Heat energy is released by the substance.

Question 8

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

from a gas to a liquid

Question 9

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

sublimation

Phase Changes — Quiz Answers

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