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Which of these changes produces a chemical change?
A. Lava cools and changes from a thick fluid to solid rock.
B. A large rock is crushed into gravel,
C. Limestone slowly dissolves in water and forms a cave,
D. A stone fizzes and forms a gas when acid is dropped on it.
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Which of these changes produces a chemical change?
A. Lava cools and changes from a thick fluid to...
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