Question

The temperature at which water evaporates into steam is called _____.

Answer 1

Hint: We need to know that during the vaporization process the phase transition takes place from liquid phase to vapour. Which means, the solid or liquid phase is converted into gaseous phase. Vaporization is divided into two types and that is, evaporation and boiling. The boiling is the bulk phenomenon. But the evaporation process is a surface phenomenon. If the solid is directly converted into vapour that process is known as sublimation.

Complete answer:
We have to remember that the temperature at which water evaporates into steam is known as boiling point. The boiling point mainly depends on the intermolecular forces present between the molecules. If the intermolecular force is very strong, the boiling point will be very high. Then more energy is required for the breakage of bonds present in the molecules. If the intermolecular force is weak, the boiling point is also very weak. Then small energy needs to break the bonds.
In the case of water, if it attains its boiling point, the hydrogen bond present between the water molecules will begin to break. And when the water gets to its heat of vaporization, then the liquid water is converted to its gaseous phase. The boiling point of water is equal to\[100^\circ \].

Note:
We have to know that the boiling point is the temperature required to change the phases of a material from liquid state to gaseous phase or vapour phase. And this mainly depends on the heat of vaporization. It is the energy required to transform the substance from liquid phase to vapour phase. The boiling point increases with increasing the intermolecular forces of attraction. By using the boiling point, we can determine the physical properties and structural characteristics of the materials.