A How does matter change from one state to another?

B How is melting similar to solidification? How is it different?

A. Matter can change from one state to another if heated or cooled.

B. The difference is evaporation is a change from liquid to gas ... Melting is similar to solidification because they both involve a part in being liquid and solid. They are different because melting is solid to liquid and solidification is liquid to solid.