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What is evidence that a chemical change has happened? O A. The temperature of a substance increases or decreases. B. The amount of matter increases. C. A substance changes into a new kind of substance.
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What is evidence that a chemical change has happened?

O A. The temperature of a substance increases or decreases.
B. The amount of matter increases.
C. A substance changes into a new kind of substance.
O D. You observe a color change.

User Kirushik
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i think the answer is D
User Mistertim
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