Melting matter does not change its 
crust metal mass O3 heat cycles energy liquid
A B C D E F G H
Melting, freezing, condensation, and evaporation are examples of phase changes.
Melting matter does not change mass
Melting matter does not change its  (A) crust (B) metal (C) mass (D) O3 (E) heat (F) cycles (G) energy (H) liquid