Melting Definition in Chemistry

Chemistry Glossary Definition of Melting

Ice cream in a bowl
An example of melting is seen when ice cream changes from a solid into a liquid. Chris Gramly/Getty Images

Melting is the process by which a substance changes from the solid phase to the liquid phase. Melting is also known as fusion, although this term has several meanings in science. Melting occurs when the internal energy of a solid increases, usually through the application of heat or pressure, such that the molecules become less ordered.


In ice cube melting into liquid water is a familiar example of the process. Another common example is melting butter in a hot pan.

mla apa chicago
Your Citation
Helmenstine, Anne Marie, Ph.D. "Melting Definition in Chemistry." ThoughtCo, Oct. 24, 2022, Helmenstine, Anne Marie, Ph.D. (2022, October 24). Melting Definition in Chemistry. Retrieved from Helmenstine, Anne Marie, Ph.D. "Melting Definition in Chemistry." ThoughtCo. (accessed April 1, 2023).