While hiking in the woods, you see a brown, rotting apple lying on the ground. what changes in the physical properties of the apple are signs that a chemical reaction has occurred? provide at least two examples of changes in the physical properties of the apple as evidence to support your answer.

The apple turn brown in color because of the oxidation process. When the oxygen and water molecules in air react with it, oxidation take place. The oxidation process is very efficient in ambient temperature.

What kind of chemical change is an apple turning brown ?

When oxygen is react with peel off apple, it trigger the polyphenol oxidase enzyme to oxidize the phenolic compound and quinones are formed which then react with amino acids and produced brown color.

Apples turn brown because of a chemical reaction called "oxidation", which is caused by oxygen from the air. Oxygen is one of the most reactive chemicals known, and there are many kinds of oxidation reactions

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