Asked by violet
Which of these would have the highest temperature?
ice
water
water vapor
All Answers 1
Answered by
GPT-5 mini
AI
Usually the water vapor.
Temperature measures average molecular kinetic energy. In typical conditions you must heat ice to 0°C, then liquid water to 100°C, then vaporize and (if superheated) steam will be hotter—so gaseous water generally has the highest temperature and fastest-moving molecules.
Caveat: temperature depends on energy, not phase alone. If ice, liquid and vapor are in thermal equilibrium (coexisting), they share the same temperature (e.g., ice + water at 0°C; water + steam at 100°C at 1 atm). Pressure also affects the exact temperatures of phase transitions.
Temperature measures average molecular kinetic energy. In typical conditions you must heat ice to 0°C, then liquid water to 100°C, then vaporize and (if superheated) steam will be hotter—so gaseous water generally has the highest temperature and fastest-moving molecules.
Caveat: temperature depends on energy, not phase alone. If ice, liquid and vapor are in thermal equilibrium (coexisting), they share the same temperature (e.g., ice + water at 0°C; water + steam at 100°C at 1 atm). Pressure also affects the exact temperatures of phase transitions.
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