At what temperature does water turn into steam?

• A. 0°C
• B. 373K
• C. 100°C
• D. 212°F

Answer: (B)

Water turns into steam at 100°C, which is equivalent to 212°F or 373K. The transition from liquid water to steam occurs at this temperature under standard atmospheric pressure (1 atmosphere).

When considering the boiling point of water, it’s important to note that both the Celsius and Fahrenheit scales recognize this temperature as the point at which water begins to vaporize. The Kelvin scale, being an absolute temperature scale, places this transformation at 373K, making it the correct representation in that context.

Understanding these temperature conversions helps in various aspects of science and daily life, particularly in engineering and environmental studies, where knowledge of phase changes of water is crucial.