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Select the correct answer. Which of the following is a chemical reaction?

A. Breaking a glass pane
B. Freezing water
C. Digestion of food
D. Cutting down a tree
E. Evaporation of rubbing alcohol

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Final answer:

Chemical vs. physical changes explained with examples.


Explanation:

Evaporation of rubbing alcohol is a chemical reaction because it involves the liquid alcohol turning into a gas. On the other hand, actions like breaking a glass pane, freezing water, cutting down a tree are physical changes since they do not involve the formation of new substances through a chemical reaction. Digestion of food, for instance, involves various chemical reactions in the body to break down food into nutrients.


Learn more about Chemical vs. physical changes here:

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