Question

Which changes of state involve the absorption of heat? Check all that apply

Answer 1

Fusion, Evaporation and Sublimation involve absorption of heat

Explanation:

The possible changes of states for matter are:

• Fusion: from solid to liquid
• Evaporation: from liquid to gas
• Condensation: from gas to liquid
• Freezing: from liquid to solid
• Deposition: from gas to solid
• Sublimation: from solid to gas

In the changes of state mentioned above:

• Heat is absorbed when the matter transforms from a state with lower energy to a state with higher energy
• Heat is released when the matter transforms from a state with higher energy to a state with lower energy

The energy of the states is as follows:

Solid < Liquid < Gas

Therefore, heat is absorbed only in the following changes of state:

• Fusion
• Evaporation
• Sublimation

While in the other three changes, energy is released.

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Answer 2

Answer:

A.) melting

D.) vaporization

E.) sublimation

Explanation: