Kinetic energy of water molecules after shaking

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SUMMARY

The discussion focuses on the kinetic energy of water molecules when subjected to vigorous shaking, emphasizing the increase in translational, vibrational, and rotational energy. It confirms that shaking enhances the chaotic motion and collisions of water molecules, leading to a slight temperature increase. The conversation also explores how the specific heat of water is influenced by the degrees of freedom in its molecular structure. Key concepts include the relationship between molecular motion and temperature changes in liquids.

PREREQUISITES
  • Understanding of kinetic energy and its forms: translational, vibrational, and rotational.
  • Basic knowledge of molecular dynamics and temperature changes in liquids.
  • Familiarity with specific heat capacity and degrees of freedom in molecules.
  • Concept of chaotic motion and its impact on molecular interactions.
NEXT STEPS
  • Research the principles of kinetic molecular theory in liquids.
  • Explore the relationship between temperature and molecular motion in water.
  • Study the effects of shaking on the specific heat of different substances.
  • Investigate the degrees of freedom in various molecular structures and their impact on energy changes.
USEFUL FOR

Students of chemistry, physicists, and anyone interested in the thermodynamic properties of liquids, particularly in understanding molecular behavior under mechanical agitation.

jtschild
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When water is vigorously shaken the kinetic energy and, hence, the motion of the molecules increase. Which particular forms of energy do increase : the translational energy (is this the energy associated with the collision and the chaotic random motion of the water molecules ?) or also the vibrational one (vibration of the atoms in the water molecules ?) and the rotational one (rotation of the atoms ?) Is the (slight) temperature change after shaking also caused by the increase in vibration and rotation of the atoms in the water molecules or only by their collision ?
 
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Which particular forms of energy do increase : the translational energy (is this the energy associated with the collision and the chaotic random motion of the water molecules ?) or also the vibrational one (vibration of the atoms in the water molecules ?) and the rotational one (rotation of the atoms ?)
Get a box of random shaped objects and shake it - does the shaking affect only the translational behavior of the objects or does it change the rotating behavior too? IF some of the objects are springy, you can carefully look to see if shaking affects the vibrational behavior as well.

Is the (slight) temperature change after shaking also caused by the increase in vibration and rotation of the atoms in the water molecules or only by their collision ?
How is specific heat affected by the number of degrees of freedom in the molecule you mean?
 

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