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OpenStudy (anonymous):
When a substance undergoes a phase change, 1)the mass increases. 2)decreases. 3)stays the same. 4)increases or decreases depending on the phase change.
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OpenStudy (anonymous):
Try the Science section lol
OpenStudy (anonymous):
2
OpenStudy (anonymous):
i think it is 3....not sure
OpenStudy (anonymous):
me and my friend both thought it was 1
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