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Brianna mixes two liquids together and the solution turns warm. What is an indicator of a chemical
change in the scenario?
A Formation of a gas
B Formation of a precipitate
C Change in color
D Change in energy

Sagot :

rspill6

Answer:  Change in energy

Explanation:  The only evidence provided in the experimental statement is that the "solution turns warm."  While the options include positive evidence of a chemical reaction, only "Change in energy" provides both evidence and correlation with an observation.

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