Which is not a clue that could indicate a chemical change?

a change in taste

b change in color

c change in shape

d change in odor

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ANSWER: C. change in shape

• A change in shape cannot be a clue to indicate chemical change.
• For example, you cut a paper into smaller pieces. The pieces of paper changes in shape (also in size) but it did not form into a new substance.

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:D Hope this helps!