Which phase change is an example of an exothermic process?
A.
solid to liquid
B.
solid to gas
C.
liquid to solid
D.
liquid to gas
E.
solid to plasma
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C is an exothermic process. To form solid from a liquid, heat energy must be realised to push particles together and form bonds. An endothermic process is when heat is absorbed to break bonds between particles (liquid-> gas)
