Question

y does a appel change clolur when exposed to air (eaten) ​

Answer 1

Answer:

Apples turn brown when exposed to air because of the oxidation process that goes on when the inside of the apple gets exposed to the ambient air which contains oxygen and water molecules. The skin of the apple protects it from this process. This oxidation process is very sensitive to the ambient temperature

Answer 2

Explanation:

When an apple is cut (or bruised), oxygen is introduced into the injured plant tissue. When oxygen is present in cells, polyphenol oxidase (PPO) enzymes in the chloroplasts rapidly oxidize phenolic compounds naturally present in the apple tissues to o-quinones, colorless precursors to brown-colored secondary products.