Water
H2O dihydrogen monoxide. A colourless, tasteless liquid with some very peculiar properties that stem from the bent H-O-H structure of its molecules. Water is distinguished from other common terrestrial substances in existing in all three phases at atmospheric temperatures and pressures. The phase changes, are of great significance in many geophysical processes. The same is true of the large specific heat of liquid water and ice relative to both land surface and atmosphere. Water's complex absorption spectrum gives rise to the greenhouse effect.
| Density | 998 (Ice: 917) | kgm-3 | Clip |
| Melting Point | 273 | K | Clip |
| Boiling Point | 373 | K | Clip |
| Linear expansivity | (Ice: 5.0E-5) | K-1 | Clip |
| Specific heat capacity | 4190 | Jkg-1K-1 | Clip |
| Latent heat of evaporation | 2260000 | Jkg-1 | Clip |
| Thermal conductivity | 0.591 | Wm-1K-1 | Clip |
| Refractive index | 1.333 | at 589.3nm 101.3kPa 0°C | Clip |
| Dielectric constant | 80 | Clip | |
| Acoustic wave velocity (longitudinal bulk waves) | 1498 | ms-1 | Clip |
| Bulk Modulus of Rigidity | 2050000000 | Nm-2 | Clip |
| Surface Tension | 0.0727 | Nm-1 | Clip |
| Viscosity | 0.001 | Nsm-2 | Clip |
| Kinematic Viscosity | 1.00200400801603E-06 | m2s-1 | Clip |
| Electromotive Series | -1.23 | V | Clip |
| Triple Point | 273.16 | K | Clip |
paste all data into clipboardSee also: Anhydrous, Atmometer, Atmometry, Brakish Water, Carbonate Water Hardness, Drinking Water, Heavy Water, Hydrogen, Hydrophilic, Hydrophobic, Hygroscopic, Ice, Oxygen, Permanent Hardness, Sour Water, Steam, Temporary Water Hardness, Waste Water, Water Glycol Fluid, Water Hammer, Water Hardness, Water Softener, Wetting.
- Weblinks:
- Water Encyclopedia Acid Rain to Water Quality.
- International Association for the Properties of Water and Steam Properties of water and steam, particularly thermophysical properties and other aspects of high-temperature steam, water and aqueous mixtures that are relevant to thermal power cycles and other industrial applications.