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5 March, 10:59

Which describes how chemical changes are different from physical changes? Select one: a. Chemical changes can be measured, but physical changes cannot. b. Chemical changes involve the formation of a new substance. c. Chemical changes release energy, but physical changes absorb energy. d. Chemical changes cannot be caused by oxygen.

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  1. 5 March, 12:03
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    B. Chemical changes involve the formation of a new substance.

    Explanation:

    They can both release energy, both can be measured, and chemical changes can be caused by oxygen, so I believe it would be B.
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