The temperature at which a liquid becomes a gas is known as its boiling point. This temperature varies depending on the substance. For example, water boils at 100°C (212°F) at standard atmospheric pressure. However, other liquids have different boiling points. For instance, alcohol boils at around 78°C (172°F), while mercury boils at 356.7°C (674°F).
The boiling point is the temperature at which the vapor pressure of the liquid equals the external pressure surrounding the liquid. When this happens, bubbles of vapor form within the liquid, and it begins to turn into a gas. The process of a liquid turning into a gas is called vaporization.
It’s important to note that the boiling point can change with pressure. For example, at higher altitudes where the atmospheric pressure is lower, water boils at a lower temperature. Conversely, in a pressure cooker where the pressure is higher, water boils at a higher temperature.