What is the process called when a solid changes to a liquid?

What is the process called when a solid changes to a liquid?

• A. Freeze
• B. Melt
• C. Condense
• D. Evaporation

Answer: (B)

Melting is the process by which a solid becomes a liquid. This happens when the solid absorbs heat, giving its particles enough energy to break free from fixed positions and slide past one another, forming a liquid. During melting, the temperature holds steady at the melting point while the solid changes state because the added energy goes into changing the state rather than raising temperature. After melting, the liquid can continue to warm if more heat is added. This differs from freezing (liquid to solid), condensing (gas to liquid), and evaporation (liquid to gas). So the solid-to-liquid change is melting.

Melting is the process by which a solid becomes a liquid. This happens when the solid absorbs heat, giving its particles enough energy to break free from fixed positions and slide past one another, forming a liquid. During melting, the temperature holds steady at the melting point while the solid changes state because the added energy goes into changing the state rather than raising temperature. After melting, the liquid can continue to warm if more heat is added. This differs from freezing (liquid to solid), condensing (gas to liquid), and evaporation (liquid to gas). So the solid-to-liquid change is melting.