What is the relationship between molecular motion and energy?

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

Ametal with a large number of free flowing electrons most likely has good conductivity

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).