Phase Change MidUnit Test Review

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Ava said she could tell what phase a substance is in just by looking at it. How can she do this?

She could tell by the way the molecules move around each other

Liquid oxygen and liquid helium are very different, but they have one thing in common. That one thing is...

they are moving and flowing around each other

A solid piece of butter is placed over heat on the stove. After some time, the butter becomes a liquid. Why?

the butter molecules became more loosely connected

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