Suppose that when you wake up in the morning, you are very hungry. You go to the refrigerator and remove an egg. On the way to the stove, you drop the egg on the floor and the egg breaks. You get a second egg from the refrigerator, break the egg shell, and drop the egg into the frying pan. You notice that some eggshell pieces have fallen into your egg, so you pick out the eggshell pieces by hand. You stir the egg to make a scrambled egg. You then turn on the stove and cook the egg. When cooked, you eat the egg. Which of the italicized items are physical changes and which are chemical changes?