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The outer surface of a beaker containing ice cubes becomes wet in short while - Give scientific reason.

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Question  The outer surface of a beaker containing ice cubes becomes wet in short while. Answer  When ice cubes are placed in a beaker, ice starts melting.  The heat required for melting is absorbed from the surrounding air and also from the beaker to some extent.  Hence, the temperature of the air and beaker falls.  The capacity of air to hold water vapour depends upon the temperature of the air, and this capacity decreases as the temperature decreases.  At a certain low temperature, the surrounding air becomes saturated with water vapour present in it.  As the temperature falls further, the air is unable to hold all the water vapour.  Hence, the extra water vapour starts condensing on the cold outer surface of the beaker in the form of minute drops.  Therefore, The outer surface of the beaker containing ice cubes becomes wet in a short while.
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Some fundamental related to heat and temperature:

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Some fundamental related to heat and temperature:

1) According to kinetic theory, matter is made up of molecules which are in state of continuous motion.

2)In solids the molecules are closely packed and they exert a strong force of attraction on each other.

3)In liquids the intermolecular force is week while in gases it is negligible.

4)Because of random motion, the molecules posses kinetic energy. The sum of all energies present is called thermal energy of the object.

5)Heat is form of this thermal energy transferred between two or more system or between a system and surrounding by the virtue of temperature difference.

6)Temperature is used to measure heat.

7)Heat transfer takes place by three ways- conduction (solids), conservation (liquids or gases) and radiation.

8)Heat is measured in terms of joule (SI) and calories (CGS) 

9)Temperature is measured in degree Celsius are the two used to measure temperature.
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