Chemistry, 21.10.2021 03:00 calvinclifton
A student observes some firewood as it is heated and burns. The student concludes that a chemical reaction has occurred. Which of the following observations about the burning wood provides the best evidence of a chemical reaction?
A. Heat is added to the firewood.
B. The wood change shape and size.
C. The temperature of the wood increases.
D. Gas is produced as the wood turns black.
Answers: 3
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