You are presented with the question "What is converted in a flashlight?" and the following answer choices: 
- hydrogen and oxygen
 - adding heat
 - an electron lens
 - hydrogen to water
 - chemicals to light
 - batteries into solar
 - heat into light
 - chlorofluorocarbons

Now knowing that aflashlight converts chemical energy into light energy and ajoule is roughly the energy used by a flashlight turned on for one second, choose the best answer.


 

     chemicals to light    