Question

What change in energy occurs when you burn coal or petroleum? potential energy is converted to chemical energy chemical energy is converted to thermal energy electrical energy is converted to mechanical energy nuclear energy is converted to electrical energy?

Answer 1

chemical energy is converted to thermal energy

Answer 2

Chemical to thermal.

Step-by-step explanation:

When we burn coal or petroleum, the carbon, hydrogen ,sulfur etc undergoes combustion reaction.

Due to these combustion reaction large amount of energy is released.

Here the chemical energy of compounds is being converted to thermal energy.

There is no electrical energy associated with coal or petrol.

There is no nuclear energy associated with coal or petrol.

There is no mechanical energy is involved in the process.