Why is it sometimes difficult to decide whether an observed change is physical or chemical?

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Conceptual Physical Science

ISBN: 978-0134060491

6th edition

Authors: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt

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Question Posted: Jan 28, 2019 12:40 PM

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Why is it sometimes difficult to decide whether an observed change is physical or chemical?

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Conceptual Physical Science

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