The temperature at which water vapor condenses to liquid form is called: a. precipitate c. evaporation b. dew point d. relative humidity

Water exist in three phases: solid (ice), liquid and vapor. The phases can be interconverted either by supplying energy in the form of heat or by the removal of energy.

The process are as follows:

1) Solid ↔ Liquid is termed as melting

2) Liquid ↔ Vapor is termed as evaporation

3) Solid ↔ Vapor is termed as sublimation

4) Liquid ↔ Solid is termed as fusion

5) Liquid ↔ Vapor is termed as condensation

The phase transitions occur at characteristic temperatures. Condensation of water vapor to liquid occurs at the dew point.

1.solid

2.carbon dioxide

3.helium