Which process is the solid turning into a liquid when heat is applied?

Which process is the solid turning into a liquid when heat is applied?

• A. Melting
• B. Freezing
• C. Condensation
• D. Deposition

Answer: (A)

Melting is the process by which a solid becomes a liquid when heat is added. When you heat a solid like ice, the energy makes the particles move more vigorously, enough to overcome the forces holding them in a rigid structure. Once those forces are overcome, the material can flow, forming a liquid. This phase change occurs at the melting point, such as ice melting at 0°C under standard pressure. In contrast, freezing is the reverse change (liquid to solid when heat is removed), condensation is gas to liquid, and deposition is gas to solid. So the solid turning into a liquid with heat is melting.

Melting is the process by which a solid becomes a liquid when heat is added. When you heat a solid like ice, the energy makes the particles move more vigorously, enough to overcome the forces holding them in a rigid structure. Once those forces are overcome, the material can flow, forming a liquid. This phase change occurs at the melting point, such as ice melting at 0°C under standard pressure. In contrast, freezing is the reverse change (liquid to solid when heat is removed), condensation is gas to liquid, and deposition is gas to solid. So the solid turning into a liquid with heat is melting.