I know very little about electricity, but I'm trying to understand it better. I'm trying to wrap my head around something- I have heard it said that, "the flow of electricity through a circuit is due to the movement of electrons". While this explanation sounds simple enough, I have some questions: Let's look at electricity being passed through a copper wire from - to + on a battery. If I am correct, I believe that electricity flows from - to +, and current flows from + to -...is that right? 1. If the atoms of the wire are comprised of N, P and e-, why don't the N and P move? 2. If atoms make up mass, why isn't a portion (no matter how minute) of the mass moved over a long period of time? 3. Or are we talking "free" electrons, as in static electricity? 4. Or is it a collision of electrons (perhaps from free electrons "overloading" the shells in atoms of the copper wire) causing a chain reaction to transfer e- along a path (the wire)? 5. Or is it the simple fact that we are hooked to a battery + on one side and - on the other?