How does energy change from one to another?

Answer 1

Chemical, mechanical, thermal, kinetic, electro-magnetic - all of the transfer of energy between any of these types to other types involves CONTACT between the interacting substances.

Answer 2

Energy can change from one form to another through various processes such as transformation, conversion, and transfer. For example, potential energy can be converted to kinetic energy, and electrical energy can be transformed into thermal energy. The total amount of energy in a closed system remains constant, following the principle of conservation of energy.