"The molecules of metal in the engine are not free to move about like air or water"
As I said you can PAY for an education and still be ignorant. You are an arts graduate maybe? HS cert? GED maybe?
So tell me FBW what exactly DOES move inside the metal. You can use any model you want as an illustration. The one I use was draughted by Niels Bohr in 1911. It is graphic..it has a pic usually..so I guess you should be able to grasp the idea.
