Question

choose the image where a chemical reaction has not taken place. eggs cooked. marshmallows browned.

Explanation:

Cooking eggs changes the protein structure through denaturation, a chemical reaction. Browning marshmallows involves a Ma -illard reaction, also a chemical reaction. Water boiling is a physical change as it only changes the state from liquid to gas without altering the chemical composition of water. Plant growth involves multiple chemical reactions like photosynthesis. So the image of boiling water shows no chemical reaction.

Answer:

The image of water boiling.