What term describes water turning into ice?

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

Answer: (A)

Freezing is the process where a liquid becomes a solid as it loses energy. When water is cooled to below 0°C (32°F) at typical pressures, its molecules slow down enough to arrange into the orderly lattice of ice, turning liquid water into solid ice. This is a physical change where the chemical formula remains H2O. The other terms describe different phase changes: condensation is gas turning into liquid, evaporation is liquid turning into gas, and sublimation is solid turning into gas. So the term that describes water turning into ice is freezing.