Which process occurs first, evaporation or boiling?

Boiling and evaporation are both examples of vaporization from a liquid into a gas. If you have a liquid in a closed container, some molecules will escape from the surface and go into the has phase. This is evaporation. read more

Boiling occurs when the temperature of the liquid is greater than the boiling point of the substance. Evaporation can occur at any temperature. It occurs as long as the substance remains liquid at a particular temperature. read more

Boiling occurs when the temperature of the mass exceeds the boiling point. The kinetic energy (temperature) forces the particles apart which increases pressure. If this pressure of this mass of liquid exceeds its environment then it'll, in turn, increase the rate evaporation (hence the formation of bubbles). read more

The particles of the liquid i.e water, go up into the air becoming gas particles i.e water vapor. read more

Why evaporation occurs Heat (energy) is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is why water easily evaporates at the boiling point (212° F, 100° C) but evaporates much more slowly at the freezing point. read more