FTCE Professional Education Practice Exam

At what temperature does water boil in degrees Celsius?

1. 90 degrees C

2. 100 degrees C

3. 110 degrees C

4. 120 degrees C

The correct answer is: 100 degrees C

Water boils at 100 degrees Celsius at standard atmospheric pressure (1 atmosphere or 101.3 kPa). This boiling point is a fundamental property of water that is widely used in scientific experiments, cooking, and various industrial processes. The boiling point can change with variations in atmospheric pressure, but at sea level and under normal conditions, 100 degrees Celsius is the temperature at which water transitions from a liquid to a gas, forming steam. This property is essential in understanding concepts related to temperature, phases of matter, and thermodynamics.