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Matter In Our Surroundings
What do you mean by latent heat?
Latent heat define as the quantity of heat absorbed or released by a substance undergoing a change of state, such as At 0°C, when the ice melts, the temperature of the system does not change though the heat is continuously supplied. The given heat is used up in overcoming the force of intermolecular attraction. This results in the conversion of ice into water. As this heat energy is absorbed by ice without any rise in temperature of the system, this heat is considered as hidden in the system and is known as latent heat.
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Convert the following temperatures to Kelvin scale
25°C
What is the physical state of water at
100 °C
For any substance, why does the temperature remain constant during the change of state ?
Suggest a method to liquify atmospheric gases.
Convert the following temperatures to Kelvin scale.
35°C
Give reason for the following observations.
Naphthalene balls disappear with time without leaving any solid.
Give reason for the following observations.
We can get the smell of perfume sitting several metres away.
What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
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