Question

There is no loss or gain of energy in _________ change.
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Answer 1

condensation or vaporization

I think so buddy

Answer 2

The correct answer in the given blank is Physical change.

• A physical change or physical transformation is one in which only the physical properties of the constituent atoms or molecules are modified or altered.
• There is neither a dissipation nor a gaining of energy.
• This is because, in order for energy to be lost or gained, new material must be formed from the original compound.
• This phenomenon manifests itself as heat energy in the event of chemical transformation.
• However, because no new molecule is formed during physical change, there is no energy loss or gain.
• Only physical properties are changed, and they can be restored to their former state via physical procedures.
• For this reason, physical change is the correct answer.