Phase change from liquid to solid.

Phase change from liquid to solid.

• A. Melting
• B. Freezing
• C. Evaporation
• D. Sublimation

Answer: (B)

Freezing is the process where a liquid becomes a solid as it is cooled. When energy is removed, the particles slow down enough to lock into an orderly structure, forming a solid lattice. It’s the reverse of melting, which is when a solid becomes a liquid as it absorbs heat. At standard pressure, pure water freezes at 0°C, though impurities can lower the freezing point. Melting, evaporation, and sublimation describe other directional changes: solid to liquid, liquid to gas, and solid to gas, respectively.

Freezing is the process where a liquid becomes a solid as it is cooled. When energy is removed, the particles slow down enough to lock into an orderly structure, forming a solid lattice. It’s the reverse of melting, which is when a solid becomes a liquid as it absorbs heat. At standard pressure, pure water freezes at 0°C, though impurities can lower the freezing point. Melting, evaporation, and sublimation describe other directional changes: solid to liquid, liquid to gas, and solid to gas, respectively.