Where it says "in the process of changing the energy is not created and cannot be lost, but can be changed to a different format." One rule is to indicate the changes that occur within the various systems. When there is a change in both chemical and physical.
Which said that "the process of change in the energy will not be rebuilt and not lost. You can be in another form "rule is indicative of the energy changes that occur within the system. When the chemical and physical changes.
Which says, "in the process of the changes that energy will not be rebuilt, and ไม่มีการสูญหาย. But can change into another ". One of the rules would indicate the changing energy that occur within the system.