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WGU (MTC1) Integrated Physical Sciences Exam - Topic 1 Question 3 Discussion

Actual exam question for WGU's WGU (MTC1) Integrated Physical Sciences exam
Question #: 3
Topic #: 1
[All WGU (MTC1) Integrated Physical Sciences Questions]

In which phase change is energy being released to the surroundings?

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Suggested Answer: D

Energy is released during phase changes from gas to liquid (condensation). When water vapor in a cloud condenses to form raindrops, it releases energy to the surroundings. This is because the gas phase (water vapor) has higher energy than the liquid phase (raindrops), and the transition to a lower energy state (liquid) releases the excess energy.


Integrated Physical Sciences materials on condensation and energy release.

Concepts of energy changes during phase transitions.

by Demetra at Nov 24, 2025, 06:47 PM

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Deja
12 hours ago
Definitely D! Makes sense with how clouds work.
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Lasandra
6 days ago
I thought it was B at first, but that’s melting, not releasing energy.
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Ailene
11 days ago
D is the right answer! Energy is released when raindrops form.
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Gladys
16 days ago
D, for sure. Raindrops forming in a cloud is the classic phase change, complete with that lovely condensation energy.
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Gabriele
21 days ago
Haha, A is just a disaster waiting to happen. Who wants to deal with molten glass bottles? Not me!
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Alba
26 days ago
I'm going with C. Those puddles drying up are just releasing all that water back into the atmosphere. Evaporation is the way to go!
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Frank
1 month ago
I feel like I might be mixing things up, but I think D) could be right since it involves a change from gas to liquid.
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Vonda
1 month ago
I practiced a question like this before, and I think it was about evaporation releasing energy, which might relate to C) Puddles drying up.
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Roxane
1 month ago
I'm not entirely sure, but I remember something about melting absorbing energy, so it can't be B) Ice melting.
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Vallie
2 months ago
I think energy is released during condensation, so maybe it's D) Raindrops forming in a cloud?
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Bo
2 months ago
I'm pretty confident that B is the correct answer. When a solid like ice melts, it requires energy input to break the bonds and transition to a liquid state. This energy is then released to the surroundings.
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Lauran
2 months ago
I'm a bit confused. Aren't all phase changes associated with energy changes? I'll have to review my notes to make sure I understand the differences between the processes.
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Matthew
2 months ago
Definitely B. Ice melting releases energy to the surroundings, keeping the cooler nice and chilly.
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Fernanda
2 months ago
Okay, let me walk through this step-by-step. I know that in the melting process, the solid material absorbs energy to overcome the intermolecular forces and become a liquid. So B seems like the right answer.
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Merilyn
2 months ago
I think it's D. Raindrops forming.
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Ruthann
3 months ago
Wow, I didn’t know that! Surprised it’s not about puddles drying.
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Chantay
3 months ago
Gotta love a good phase change question. B is the obvious choice - ice melting is the coolest (pun intended) way to release energy.
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Yvette
3 months ago
Hmm, I'm not sure. I'll need to think this through carefully. The phase changes seem to involve both energy release and energy absorption.
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Buddy
3 months ago
I think it's B. When ice melts, it releases energy to the surroundings as it transitions from a solid to a liquid state.
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