100c

100C refers to 100 degrees Celsius, a temperature on the Celsius scale. It is most notably the boiling point of pure water at standard atmospheric pressure (one atmosphere, about 101.3 kPa). At sea level, liquid water transitions to steam when it reaches this temperature. In other common scales, 100 °C equals 212 °F and 373.15 K.

Boiling temperature is not fixed; it varies with external pressure. Under higher pressures, water boils at temperatures above 100 °C; under lower pressures, it boils at temperatures below 100 °C. This means that at high altitudes, water can boil at temperatures somewhat less than 100 °C, while in pressurized systems (such as pressure cookers), higher temperatures may be reached before boiling occurs.

The 100 °C point serves as a fundamental reference in the Celsius scale because it marks the heating transition of pure water at standard pressure. It is widely used in cooking, laboratory protocols, and industrial processes that involve boiling or heat treatment. In practice, impurities, dissolved substances, or non-ideal conditions can shift boiling behavior, so actual boiling temperatures may differ from the ideal 100 °C.

In summary, 100 °C is the boiling point of pure water at 1 atm, equal to 212 °F and 373.15 K. It functions as a key reference for temperature measurement and calibration, while recognizing that real-world boiling can vary with pressure and the presence of impurities.