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laila [671]
3 years ago
8

When heat energy is added two changes are observed: Change A: solid changes phases to a liquid Change B: liquid changes phases t

o a gas What are the names or phase changes in A and B
Chemistry
2 answers:
AlexFokin [52]3 years ago
8 0
A is melting. Melting occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid.

b is evaporation The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor
Scilla [17]3 years ago
8 0

Answer:

C) A is melting and B is evaporation.

Explanation:

Solids turn to liquids at high temperatures, and same thing with liquids turning into gases.

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