AP Chemistryeasymcq1 pt
Which observation is evidence of a physical change only?
A.Solid wax melts to liquid wax
B.Milk sours overnight
C.A banana browns
D.Vinegar fizzes with baking soda
Explanation
Core Concept
The wax's molecular identity is unchanged — only the state changes. Melting, boiling, and dissolving are physical changes.
Correct Answer
ASolid wax melts to liquid wax
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