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An experiment applies heat to a substance and produces a gas that is a new and different substance. Choose the true statement.
A. This represents a physical change only.
B. This represents a chemical change only.
C. This represents both a physical and a chemical change.
D. This represents neither a physical change nor a chemical change.

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SomerSkye
I believe it is C; reasoning being that the hint for physical change is," the producing of a gas," chemical "that's new and diff. substance. "

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