Which of these changes is an example of a chemical change?

A. Water droplets forming outside a glass on a hot day
B. Cooking an egg
C. Evaporation of water from a pan
D. Dry ice turning into a gas



Answer :

Final answer:

Cooking an egg is a chemical change while the other examples are physical changes.


Explanation:

Chemical change: Cooking an egg is an example of a chemical change because the proteins in the egg undergo a chemical reaction, changing the composition of the egg.

Physical change: Water droplets forming outside a glass on a hot day, evaporation of water from a pan, and dry ice turning into a gas are examples of physical changes where the state or appearance changes but the composition remains the same.


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