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MEASUREMENT OF HEAT

CONTENT

  1. Molecular Explanation of Temperature
  2. Measurement of Heat Energy
  3. Heat Capacity
  4. Specific Heat Capacity
  5. Determination of the Specific Heat Capacity of a Solid by Method of Mixtures
  6. Calculations Using Method of Mixtures
  7. Determination of Specific Heat Capacity of a Solid by Electrical Method
  8. Latent Heat
  9. Determination of Specific Latent Heat of Fusion of Ice
  10. Determination of Specific Latent Heat of Vaporization of Steam

 

Molecular Explanation of Temperature

According to the molecular theory solids vibrate about their mean position, when heat is applied to solid, the amplitude of vibration of these molecules become larger and their kinetic energy increases. From kinetic theory, the total translational kinetic energy of the molecules is directly proportional to the absolute temperature, thus increase in kinetic energy implies increase in temperature.

Measurement of Heat Energy

Heat is a form of energy called thermal energy that flows due to temperature difference. It is measured in joules.

The quantity of heat Q received by a body is proportional to its mass (m), and temperature change (02 –  01) and on the nature of the material the body is made of.

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