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9) How do you know a chemical change has occurred? a. New bonds have formed or bonds have broken. b. The matter has had a change in state. c. The temperature has changed. d. All of the above e. Only a
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9) How do you know a chemical change has occurred?

a. New bonds have formed or bonds have broken.
b. The matter has had a change in state.
c. The temperature has changed.
d. All of the above
e. Only a and c are indicators of a chemical change.

User Alve
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I believe the answer is E
User Sebasgo
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