Based on the context of your question regarding the phase change involving water, the correct term for the change you are describing would likely depend on whether the water is turning into vapor or if vapor is turning into water.
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Evaporation: This is the process where liquid water turns into water vapor (gas) when thermal energy is added.
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Condensation: This is the reverse process where water vapor turns back into liquid water when it loses thermal energy.
Given that you mentioned water is "changing phases," if the water is leaving a surface and becoming vapor, it would be evaporation. If the water is forming droplets on a surface from water vapor, it would be condensation.
If you could provide more details about the picture or the specific context of the phase change, I could give you a more precise answer.
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