what is this aforesaid point mentioned?
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor
Boiling point
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
mercury is good or bad conductor of heat Bad conductor of heat what is this bad conductor? It is a chemical element with the symbol Hg and atomic number 80 what are its physical characteristics? It  is a heavy, silvery-white liquid metal, it has a freezing point of −38.83 °C and a boiling point of 356.73 °C, upon freezing, the volume of mercury decreases by 3.59% and its density changes from 13.69 g/cm when liquid to 14.184 g/cm when solid, solid mercury is malleable and ductile and can be cut with a knife.
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Boiling point [SEP] Introduction
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure. A liquid in a partial vacuum has a lower boiling point than when that liquid is at atmospheric pressure. A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, water boils at at sea level, but at at altitude. For a given pressure, different liquids will boil at different temperatures.