Identify that resistance in metals is increased by the presence of impurities and scattering of electrons by lattice vibrations
- Chemical impurities disrupt the integrity of a metal lattice and impede electron flow.
- Rapid minor position changes, or vibrations, in a metal lattice impede electron flow.
- Vibrations cause a lattice to collide with free-moving electrons, deflecting or scattering them from their linear progress through the crystal.
- The degree of vibration of a lattice is directly related to its temperature, with higher temperatures increasing resistance by causing greater vibration.