* Atoms: Copper is a metal, and its atoms are arranged in a regular, repeating pattern called a crystal lattice. These atoms are held together by metallic bonds, which allow electrons to move freely throughout the lattice.
* Electrons: These free electrons are constantly moving in a random motion, similar to the motion of gas molecules. They collide with the copper atoms, transferring energy and contributing to the metal's thermal conductivity.
* Vibrations: Copper atoms themselves also vibrate around their equilibrium positions in the crystal lattice. This vibration increases with temperature.
* Overall: The overall movement of particles in copper is a combination of these individual motions: the random motion of free electrons and the vibrations of the copper atoms.
This understanding helps explain properties like copper's high electrical and thermal conductivity.
