A very Detailed explanation.
A boy of the age of four are eating apples in the back seat of car on the way home from school.
He asked his father who was driving, "well, why is the color of my Apple turned into chocolate?"
"Because," replied the father explains, "After you eat the skin, the flesh of the fruit of the Apple that will directly contact with air, which causes the flesh fruit oxidized with molecules that can change the structure of an Apple, so ultimately they changed color."
After her father completed explains, the atmosphere becomes quiet some time, until suddenly the children asked to vote slowly, "well, father's last talk at me?"
