Fact 1: Heat can change the state of matter.

Fact 2: Matter exists in a solid, liquid or gas state and can change forms.

Given the two facts above, answer the question "_ can change liquid to gas." with the following options: 
- magnetism
 - cycles
 - energy
 - vapors
 - condensation
 - gravity
 - thirst
 - Heat


 

        Heat 