Certain examples for the conversion of energy from one form to another form are,
From Chemical energy,
(a). To Thermal energy:
1. Coal
2. Natural gas
(b). To radiant energy:
1. Battery power flashlight
2. Lightstick
(c). To light energy,
1. Combustion reaction with coal
2. Combustion reaction with the wood
(d). To nuclear energy,
1. Combustion of oil
2. Combustion of gas
(e). To electrical energy,
1. Battery
(f). To gravitational energy,
1. Food
(g). To mechanical energy,
1. Gasoline
2. Petrol
