Question

turning on a switch in a flashlight starts a chemical reaction in the batteries,the chemical energy is turned to light energy and the flashlight lights up which example of this system is a process?

Answer 1

transformation of energy i.e. energy converts from one form to another.

Answer 2

turning on a switch in a flashlight starts a chemical reaction in the batteries,the chemical energy is turned to light energy and the flashlight lights up.

This is known as the law of conservation of energy.

It is referred to as the First Law of Thermodynamics.

This law states that the energy cannot be destroyed or created. One can transform it from one form to another.