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Matter In Our Surroundings
Benzene is a liquid. At 80°C, liquid benzene is in equilibrium with its vapors. It is found that particles of benzene vapors are more energetic than particles of liquid benzene. Explain the observation.
Particles of benzene vapors are more energetic because of benzene vapours have gained extra energy in the form of latent heat of vaporisation. Hence it is more energetic.
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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
Give two reasons to justify
Water at room temperature is a liquid.
Give two reasons to justify
An iron almirah is a solid at room temperature.
Why is ice at 273K more effective in cooling than water at the same temperature ?
What produces more severe burns, boiling water or steam ?
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