Excitation energy of a water molecule

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Chart:
Water can absorb heat energy in the form of vibrations or movement of its molecules. This energy content depends on the physical state: steam contains more energy than liquid water, for example.

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Letzte Aktualisierung: 28.09.2018

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Experimento | 10+: A4 Evaporation heat
Physics and chemistry of water

Beschreibung:

The material surrounding us takes on different physical states depending on pressure and temperature (in Kelvin): solid, liquid or gaseous. This also applies to water: During a phase change from solid to liquid and liquid to gas respectively the energy of the water molecules increases without the temperature rising – the diagram for water shows plateaus. The values of these plateaus are approx. 6 kJ/mol (melting heat) and approx. 40,7 kJ/mol (vaporization heat) respectively.

Information and ideas:
Ideally suited for explaining the topic of phase equilibrium.

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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; Water; Energy store; Graphics; State of aggregation; Water

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Siemens Stiftung Media Portal

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MediaHouse GmbH

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Excitation energy of a water molecule

Chart:
Water can absorb heat energy in the form of vibrations or movement of its molecules. This energy content depends on the physical state: steam contains more energy than liquid water, for example.

Verfügbar auf CREA

Bleiben Sie auf dem Laufenden!

Excitation energy of a water molecule

Chart:Water can absorb heat energy in the form of vibrations or movement of its molecules. This energy content depends on the physical state: steam contains more energy than liquid water, for example.

Verfügbar auf CREA

Bleiben Sie auf dem Laufenden!

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Chart:
Water can absorb heat energy in the form of vibrations or movement of its molecules. This energy content depends on the physical state: steam contains more energy than liquid water, for example.