Which best describes the relationship between internal energy and thermal energy

Thermal energy is heat that flows, and heat is the part of internal energy that can be transferred. Its particles have less kinetic energy.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

you didnt put any of the following