Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 1 - The Nature of Chemistry - Questions for Review and Thought - Topical Questions: 33a

Answer

outside energy

Work Step by Step

The body converts energy stored in the bonds of the molecules into energy that it can use. Since the molecules (food) came from outside of the body, the source of energy is outside.
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