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How does the motion of particles in a gas change as the gas cools?

User Weedoze
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2 Answers

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They move more slowly.

"When particles move slowly enough for their attractions to bring them together, droplets of liquid form." - centergrove

User Jeff Wight
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As the gas cools the motion of the particles slow down and they move imperfectly (motion is starting to get affected by IMFs, bounces off of the container walls are no longer perfectly elastic).
User Benjamin Abt
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