Fact 1: Phase changes do not change mass.

Fact 2: Melting is a phase change.

Given the two facts above, answer the question "What happening to something will not change its mass?" with the following options: 
- growing
 - Dilution
 - energy
 - doubling
 - melting
 - It expands
 - Energy.
 - shrinking


 

     melting    