Scientists digging in a cave found an unknown substance. The scientists found that the substance’s molecules were moving around each other. The scientists increased the speed of the substance’s molecules and caused a phase change. How did the scientists do this, and how did this affect the substance?
The scientists transferred energy . . .
a
into the substance, and the substance changed into a gas.
b
into the substance, and the substance changed into a liquid.
c
out of the substance, and the substance changed into a solid.
d
out of the substance, and the substance changed into a liquid.
Answers: 3
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