Condensation in Heat – Class 10 Science Experiment

Chapter Name: Heat

Activity Name: Condensation in Heat

Activity Description:

In this experiment, we will observe the process of condensation by placing a glass tumbler containing cold water on a table. As the water in the tumbler is colder than the surrounding air, water droplets will form on the outer surface of the glass. We will investigate the reason behind this phenomenon.

Required Items:

  1. Glass tumbler
  2. Cold water

Step by Step Procedure:

  1. Place the glass tumbler on the table.
  2. Pour cold water into the tumbler, filling it up to half its height.

Experiment Observations:

  1. Water droplets form on the outer surface of the glass tumbler.


  1. Be careful while handling the glass tumbler to avoid any breakage or injury.
  2. Ensure that the water used is genuinely cold to observe the condensation effect clearly.

Lesson Learnt from Experiment:

Through this experiment, we learn that condensation is a warming process that occurs when the temperature of surrounding air is higher than the temperature of a cold surface, in this case, the glass tumbler containing cold water.

As water vapor molecules in the air come into contact with the cool surface of the glass, they lose kinetic energy and convert into liquid droplets. This energy transfer causes the temperature of the glass and the water inside to increase.

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