Liquid phase
Official name
Liquid water
Secondary names
Water; oxidane; Hydrogen oxide; Dihydrogen oxide
Type
Class
hydrogen bonded molecular liquid
Compound type
liquid
Phase type
liquid
Chemical composition
Formula
$H_2O$
Chemical formula
H2O
Isotope mixture type
terrestrial abundance
  Formula Name Family Mole fraction State Relevance
$H_2O$ Water molecule 1.0 pure main
Chemical functions
  Function Number
$R-OH$ 2
Chemical bonds
  Bond Number
$-O-H$ 2
Molar mass
18.0153 $g/mol$
Density
0.997 (298 K) $g/cm^3$
State NTP
liquid
Phase transitions
Phase transition type Other phases Temperature - Pressure
triple point solid-liquid-gas liquid water, gas 273.16 K (611.66Pa)
solid-liquid liquid water 273.15 K (100 kPa)
Refraction index n
1.3330
Pure color
colorless
Diaphaneity
transparent
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