Afirecracker converts chemical energy into sound, and sound waves are vibrations in matter. Given these facts, a firecracker converts chemical energy into what among the following options:
- kinetic energy
 - electromagnetic energy
 - An object is seen
 - vibrations in matter
 - objects that have mass
 - harmful substances
 - The bending of a ray of light
 - Loud noises


 

    vibrations in matter     