Density depending on temperature
Bild
Chart:
Density-temperature structure of water compared with benzol; comparison shows the density anomaly of water.
Medientyp:
Bild (50,1 kByte)
Letzte Aktualisierung:
05.10.2018
Lizenz:
Dieses Medium steht unter einer CC BY-SA 4.0 international Lizenz.
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Dieses Medium steht unter einer CC BY-SA 4.0 international Lizenz.
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Beschreibung:
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?
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Lernobjekttyp:
Illustration
Fächer:
Chemistry; Physics
Klassenstufen:
Grade 7 to 9; Grade 10 to 13
Schultypen:
Middle/high school
Stichworte:
Chart; Energy supply; State of aggregation; Energy store; Graphics; State of aggregation
Bibliographie:
Siemens Stiftung Media Portal
Urheber/Produzent:
MediaHouse GmbH
Rechteinhaber:
© Siemens Stiftung 2018