Density depending on temperature
Image
Chart:
Density-temperature structure of water compared with benzol; comparison shows the density anomaly of water.
Type of media:
Image (50.1 kByte)
Last update:
2018-10-05
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
Media package:
Description:
Most substances have a continuous trend: the higher the temperature, the lower its density. In phase transitions (gas –> liquid –> solid) the density changes drastically in this temperature range. Water however has a density change at its freezing point. The density does not increase as one would generally expect but drops. The graphic shows the density-temperature behavior of "normal" substances (here benzol) as a contrast.
Information and ideas:
What could cause this behavior?
What practical importance does this anomaly of water have?
Information and ideas:
What could cause this behavior?
What practical importance does this anomaly of water have?
Related media:
There are no other media directly related to this file.
Learning resource type:
Illustration
Subjects:
Chemistry; Physics
Grade levels:
Grade 7 to 9; Grade 10 to 13
School types:
Middle/high school
Keywords:
Chart; Energy supply; State of aggregation; Energy store; Graphics; State of aggregation
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2018