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17.When a chemical change takes place, the materials present after the change can be expected to differ from those present before the change in...Select one:a. their appearance and their composition.b.
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17.When a chemical change takes place, the materials present after the change can be expected to differ from those present before the change in...Select one:a. their appearance and their composition.b. their appearance only.c. their composition only.d. neither their appearance nor their composition.

User Wang Ruiqi
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a. their appearance and their composition.

Step-by-step explanation

Chemical changes cause a substance to change into an entirely new substance with a new chemical formula.

User Kyeson
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