Electrons

The electrons that orbit closest to the nucleus are 1 attracted. They are called bound electrons. The electrons that are farther away from the pull of nucleus can be forced out of their orbits. These are called free electrons. Free electrons can move from one atom to another. This movement is known as electron flow.Electricity is the movement or flow of electrons from one atom to another. A 2 of imbalance is necessary to have a movement of electrons. In a 3 atom, the positively charged nucleus balances the negatively charged electrons. This holds them in orbit. If an atom loses electrons, it becomes positive in charge. It attracts more electrons in order to get its balance.A conductor is any 4 that allows a good electron flow and conductselectricity. A good conductor must be made of atoms that give off free electrons easily. Also, the atoms must be close enough to each other so that the free electron orbits 5 . Ignition systems use copper and aluminium wires to conduct electricity. They allow good electron flow.