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Matter In Our Surroundings
Arrange the following substances in increasing order of forces of attraction between the particles — water, sugar, oxygen.
The intermolecular force of attraction is least in gas, followed by liquid and maximum in gas. Therefore it least in oxygen followed by water and maximum in sugar. Therefore the increasing order :
Oxygen<water<sugar
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Convert the following temperature to Celsius scale.
573 K
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
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