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Why is the breakdown of glucose during aerobic respiration a chemical reaction?

Answer and explanation

Correct answer: Glucose reacts with oxygen to form new substances and release energy

In aerobic respiration, glucose reacts with oxygen to form new substances such as carbon dioxide and water, while releasing energy: \(\mathrm{C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + energy}\). Formation of new substances is the key feature of a chemical reaction. Option B describes only a physical change, in which no new substances are formed.

Related tags

ScienceClass10Chemical ReactionsRespirationOxidationGlucose

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