Which of the following options correctly differentiates evaporation and boiling?
Which of the following options correctly differentiates evaporation and boiling?
The correct option is B Evaporation takes place at any temperature that is below the boiling point.
Evaporation is the process where the molecules at the surface of a liquid gain enough energy to break away from the surface. They become gaseous. This can happen at any temperature below the boiling temperature. And only molecules at the surface are able to break away.
Boiling is the process where a liquid is heated at the boiling temperature and converted to its gaseous form. Not only the molecules at the surface, but molecules throughout the volume of the liquid are converted to the gaseous state. This is why it's called a bulk phenomenon. It happens throughout the bulk of the liquid. And of course, boiling can happen only at the boiling temperature.
Evaporation takes place at any temperature that is below the boiling point.
Evaporation is the process where the molecules at the surface of a liquid gain enough energy to break away from the surface. They become gaseous. This can happen at any temperature below the boiling temperature. And only molecules at the surface are able to break away.
Boiling is the process where a liquid is heated at the boiling temperature and converted to its gaseous form. Not only the molecules at the surface, but molecules throughout the volume of the liquid are converted to the gaseous state. This is why it's called a bulk phenomenon. It happens throughout the bulk of the liquid. And of course, boiling can happen only at the boiling temperature.
