H2O, as like any else, can exist in either a gaseous, liquid, or solid state depending on temperature. In the case of H2O (water) it's freezing temperature/melting point is 32 degrees Fahrenheit or 0 degrees Celsius. read more
A fluid is a substance that continually deforms (flows) under an applied force (pressure/stress). Fluids are phases of matter and include liquids, gases, plasmas. read more
When H 2 O (l) evaporates to H 2 O (g) , hydrogen bonds are broken and energy is absorbed. This means it is endothermic. read more