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)
Answer from: Quest
chemistry sucks a**
explanation:
Answer from: Quest
chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.
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