The Physical Properties of Water
Molecule of water H₂O. The molecule of water consist of two atoms of hydrogen and one atom of oxygen.
Molecule of water
Water is a chemical compound made of hydrogen and oxygen.
At normal temperature and pressure conditions, it is a colourless, clear and odourless liquid.
In nature, it is found in three states:
- solid — ice and snow
- liquid — water
- gas — water vapour
|Molar mass||18.01528 g/mol|
|Melting temperature||0 °C|
|Boiling temperature||100 °C|
|Density||0.99997 g/cm³ (3.98 °C/ liquid)|
|Critical temperature||374 °C|
|Critical pressure||22,140 kPa|
|Surface tension||0.073 N/m (20 °C)|
|Sound velocity, roughly||1,460 m/s|
|Specific heat coefficient||4,184 J/(kg*K) (liquid at 20 °C)|