Phase diagram of water
Image
Diagram:
A P-T diagram for pure water. The lines indicate the temperature and the pressure at which the solid, liquid, and vapor phases exist in equilibrium. All three phases exist in equilibrium only at the triple point; otherwise, there are a maximum of two phases.
Type of media:
Image (62.5 kByte)
Last update:
2016-12-08
License:
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
Description:
In addition to the equilibrium curves (melting pressure curve, sublimation curve, vapor pressure curve), the diagram also includes the pressure and temperature data for the melting, boiling, triple, and critical points.
Attention: The axes of the diagram are not shown true to scale.
Information and ideas:
This diagram also reflects the density anomaly of water (lower density in the solid state than in the liquid state): The melting pressure curve shows a negative slope. The reason for the density anomaly is the hydrogen bonds.
Attention: The axes of the diagram are not shown true to scale.
Information and ideas:
This diagram also reflects the density anomaly of water (lower density in the solid state than in the liquid state): The melting pressure curve shows a negative slope. The reason for the density anomaly is the hydrogen bonds.
Related media:
Phase diagram of water (Interactive)
Subjects:
Chemistry; Physics; Technology
Grade levels:
Grade 7 to 9; Grade 10 to 13
School types:
Middle/high school
Keywords:
Chart; Energy; State of aggregation; Steam engine; Turbine; Energy conversion; Graphics; State of aggregation; Steam engine; Turbine
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2016