An atom has kinetic energy due to the random movement of electrons within the atom. The movement of electrons are theoretically relative to the nucleus, and single KE is a function of mass and velocity, the components of atoms have a speed and this a temperature. A self contained particle nearing absolute zero could again be stationary.
Temperature in a normal situation relies are other particles, but then as others have said breaks standard conventions of physics and chemistry
my58vw t1_jd5szy4 wrote
Reply to comment by Zalack in Can a single atom be determined to be in any particular phase of matter? by Zalack
An atom has kinetic energy due to the random movement of electrons within the atom. The movement of electrons are theoretically relative to the nucleus, and single KE is a function of mass and velocity, the components of atoms have a speed and this a temperature. A self contained particle nearing absolute zero could again be stationary.
Temperature in a normal situation relies are other particles, but then as others have said breaks standard conventions of physics and chemistry