If the violent evolution of bubbles means a change from a liquid into a gas by adding heat energy, then what means a change from a liquid into a gas by adding heat energy?

Answer choices:
- Evaporation of water
 - heat is produced
 - violent evolution of bubbles
 - igniting fuel and oxidiser
 - Water expanding
 - a hemisphere is tilted away from the sun
 - evaporative cooling
 - degrees Celsius

 

   violent evolution of bubbles       