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. Condense
• C. Melt
• D. Evaporation

Answer: (C)

Melting is the change a solid undergoes when it becomes a liquid. When heat is added, the particles in a solid gain energy and vibrate more until their strong lattice can no longer hold them in fixed positions. At the melting point, the solid breaks apart enough to flow past one another, turning into a fluid. A common example is ice melting into water at 0°C (under standard conditions). Other terms describe different phase changes: freezing is liquid turning into a solid, condensation is gas turning into a liquid, and evaporation is liquid turning into a gas. Since the solid becomes a liquid, the appropriate term is melting.

Melting is the change a solid undergoes when it becomes a liquid. When heat is added, the particles in a solid gain energy and vibrate more until their strong lattice can no longer hold them in fixed positions. At the melting point, the solid breaks apart enough to flow past one another, turning into a fluid. A common example is ice melting into water at 0°C (under standard conditions).

Other terms describe different phase changes: freezing is liquid turning into a solid, condensation is gas turning into a liquid, and evaporation is liquid turning into a gas. Since the solid becomes a liquid, the appropriate term is melting.